重點講解：
1. keep sb. from doing sth. 阻止（或防止、阻礙）…做；
例句：She said that even though people may try to control their expressions, most are not able to keep their feelings from showing on their faces.
她說，即使人們試圖控制自己的表達方式，但是大多數人都無法阻止他們把自己的感受反應到面部表情上^26&^^1mY~Rs;a。
2. heat up 變熱；
例句：The room was cold when we arrived, but soon began to heat up.
我們到達時房間里很冷，但很快就變熱了起來VeWv-[w&KZg%pW7~H8&。
3. be packed with 擠滿；塞滿；
例句：The plane was packed with Dutch holidaymakers.
飛機上載滿了荷蘭的度假者_Rufvb*Y9;M#bp。
4. cool down (使)變涼；(使)冷卻；(使)降溫；
例句：Avoid putting your car away until the engine has cooled down.
在發動機冷卻之前不要把車開進車庫里7fM_Zs0JR^Qx。