1.“in case”表示“万一，如果”，例如：It may rain; you'd better take an umbrella in case it does.（可能会下雨，你最好带把伞，以防万一。）In case I'm late，start without me.（如果我迟到了，就先开始。）[qh]
2.“bounce back”的本意是“反弹，弹回”，例如：Share prices bounced back this morning.（股票价格今天早上反弹了。）口语中常用其引申意“受挫折后恢复原状”，例如：She's had many misfortunes in her life but she always bounces back.（她一生中经历过许多不幸，但她总是能重新振作起来。）[qh]
3.“additionally”相当于“in addition”，表示“另外，而且”，例如：Additionally，there are six other applicants.（另外，还有六个申请人。 ) Additionally, the bus service will run on Sundays, every two hours.（而且，公交车在星期日也运行，每两个小时发一次车。）[qh]