跟讀練習: Separating Solutions – Distillation - 通過影片學習英語口語
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34 句
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This video is sponsored in part by Blue Ring Education, the makers of Next Generation Science, Metholia and Kids Health Net.
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One way we can separate a solution is through a process called distillation.
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Let's take a look at this process in action.
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Step 1.
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Set up the distillation apparatus.
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The typical distillation apparatus consists of a burner, a distillation flask containing the substance we want to distill,
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a thermometer, a condenser, a receiving flask, and some corks to connect the components.
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Step 2.
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Cool the condenser.
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Cool water is fed into and out of the condenser to keep it at a low temperature.
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This is essential for condensing the vapour back into a liquid.
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Step 3.
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Heat the substance.
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The burner is used to heat the substance we wish to distill in the distillation flask.
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As the temperature rises, keep an eye on the thermometer to monitor the boiling point of the substance.
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Step 4.
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Vaporisation As the substance is heated, it begins to evaporate and boil,
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causing vapour to rise from the liquid in the distillation flask.
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Step 5.
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Vapour enters the condenser The vapour passes through the neck of the distillation flask and enters the condenser.
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The condenser is kept cool by the circulating water, which causes the vapour to cool and condense back into a liquid.
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Step 6.
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Collection of the distillate The condensed liquid,
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known as the distillate, drips from the condenser into the receiving flask.
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This distillate is the purified substance that we aimed to separate from the mixture in the distillation flask.
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Step 7.
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Completion of distillation
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the distillation process continues until all of the desired substance has been vaporized
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and condensed into the receiving flask the substance remaining in the distillation flask
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which has a higher boiling point is called the residue
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or the still bottom by carefully controlling the temperature
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and collecting the distillate at the appropriate boiling point we can separate
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and purify the desired substance from a mixture using the distillation apparatus.
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This method is widely used for various purposes, such as purifying water, perfumery and the production of essential oils.
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本課的詞彙與口語要點
這段影片共有 34 個句子、345 個單詞可供跟讀。 講話部分時長為 3:13。 說話人語速較慢，每分鐘約 107 個詞，你有足夠的時間模仿每一個音。 只有 67% 的單詞屬於英語最常用的 3,000 詞，詞彙難度較高。
影片中的重點詞彙
影片中 15 個值得學習的單詞，附發音和釋義：
| 單詞 | 發音 | 釋義 |
|---|---|---|
| substance 名詞 | /ˈsʌbstəns/ | 物質 /物質 |
| liquid 名詞 | /ˈlɪk.wɪd/ | 液體 /液體, 液態 /液態 |
| boil 動詞 | /bɔɪ(ə)l/ | 煮沸, 煮 |
| apparatus 名詞 | /ˌæp.əˈɹeɪ.təs/ | 儀器 /儀器, 裝置 /裝置 |
| mixture 名詞 | /ˈmɪkst͡ʃɚ/ | 混合 |
| burner 名詞 | /ˈbɝnɚ/ | 燃燒器 /燃燒器, 煤氣灶 /煤氣灶 |
| carefully 副詞 | /ˈkɛɹf(ə)li/ | 小心地 |
| connect 動詞 | /kəˈnɛkt/ | 連線 /連線 |
| collect 動詞 | /ˈkɑlɪkt/ | 庋藏, 收藏 |
| monitor 名詞 | /ˈmɑ.nɪ.tɚ/ | 顯示器 /顯示器 |
| component 名詞 | /kəmˈpoʊ.nənt/ | 元件, 部件 |
| maker 名詞 | /ˈmeɪk.ɚ/ | 製造者 /製造者 |
| sponsor 名詞 | /ˈspɒn.səː/ | 保證人 /保證人 |
| consist 名詞 | /kənˈsɪst/ | 編組 /編組 |
| cork 名詞 | /kɔɹk/ | 軟木 /軟木 |
需要注意的發音
- “sh” 和 “zh” 音: completion /kəmˈpliː.ʃən/, distillation /dɪstɪˈleɪʃən/
- 長單詞——注意重音位置: apparatus /ˌæp.əˈɹeɪ.təs/, distillation /dɪstɪˈleɪʃən/, thermometer /θɚˈmɑ.mɪ.tɚ/, evaporate /ɪˈvæp.ə.ɹeɪt/, perfumery /pəˈfjuːm(ə)ri/
如何用這段影片練習
- 先完整聽一遍影片，不要開口，記下不認識的單詞。
- 用正常速度逐句跟讀，每句重複到你的節奏與說話人一致為止。
- 錄下自己的聲音並與原聲對比，特別注意 substance, liquid, boil 這類單詞。
什麼是跟讀法？
跟讀法 (Shadowing) 是一種有科學依據的語言學習技巧，最初開發用於專業口譯員的培訓，並由多語言者Alexander Arguelles博士普及。這個方法簡單而強大：您在聽英語母語原聲的同時立即大聲重複——就像是一個延遲1-2秒緊跟說話者的影子。與被動聽力或語法練習不同，跟讀法強迫您的大腦和口腔肌肉同時處理並模模擬實的講話模式。研究表明它能顯著提高發音準確性，語調，節奏，連讀，聽力理解和口語流利度——使其成為雅思口語備考和真實英語交流最有效的方法之一。