1.belong to 属于... ；是...的成员
例句：I belong to no party.
我不属于任何派别。
2.benefit from 从...中受益
例句：She obtained maximal benefit from the course.
她从该课程中获益极大。
3.beside oneself 对自己的感情失去控制，极度兴奋，神志失常
例句：He was beside himself.
他得意忘形了。
4.better luck next time 下次好运
例句：Maybe you'll have better luck next time.
也许下次你的运气会好一点。
5.between life and death 生死抉择
例句：Keeping your head may make the difference between life and death when fire breads out.
发生火灾时，保持头脑冷静会有生死之别。
6.between the devil and the deep blue sea 进退两难
例句：The pirates had to fight and be killed or give up and be hanged, they were between the devil and the deep blue sea.
海盗们要么战斗被打死要么投降被绞死，他们进退两难。