重点讲解：
1. a stretch/stretches of time
一段时间；
eg. He was fluent in French, having spent stretches of time in Southern France.
他曾在法国南部呆过一段时间，法语流利(x-Jq8nEb5qcgY_|TQ&6。
eg. But while this courage can get you going, it can't keep you going over a long stretch of time.
这种勇气能使你开始，但它不能使你长时期坚持做一件事情&LUyq8vd0|c。
2. lock in
关禁；把…锁在屋里；
eg. Manda cried out that Mr Hoelt had no right to lock her in.
曼达大喊着说赫尔特先生无权关禁她U;wxPw^_u^n(PeO。
eg. At 9 pm the prisoners are locked in for the night.
晚9时把犯人锁进牢房过夜vMyOiY.*[njeEeVy~。
3. warm up
使暖和；变暖；
eg. USB Eye Warmer can warm up your eyes and help you to get rid of tired.
USB眼罩能够温暖你的双眼，让你摆脱疲惫#@tW95~C|.,zck。
eg. He jumped and down to warm up his body.
他上下跳动，好使身子暖和起来29m)6.LsfO#H。
4. from time to time
不时地；间或；偶尔；
eg. I can see Hieks at the library from time to time.
我在图书馆有时能看见希克斯f,D([t%_JlCY,q*~QP2K。
eg. She sat silently, flinging the odd word into the conversation from time to time.
她静静地坐着，在谈话过程中不时插上一两句话)Om&yLGId9@8|(Td%dX。
5. nothing like
（用于否定短语中强调以…为最）没有什么能比得上它；没有什么地方能比得上它；
eg. There's nothing like candlelight for creating a romantic mood.
再没什么比烛光更能营造浪漫气氛了B_QOv|k1c+m7。
eg. There's nothing like being beforehand.
最好的办法莫过于早作准备;6LBKJDd~v&v4MKQk]g)。