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重点讲解：
1. get along （与…）和睦相处；
They seemed to be getting along fine.
他们好像相处得颇为融洽。
2. pick up 拿起；提起；拾起；捡起；
Ridley picked up a pencil and fiddled with it.
里德利拿起一支铅笔，不停地在手里摆弄着。
3. back off （为避免问题或冲突而）后退，避让，退缩；
They backed off in horror.
他们心怀恐惧地退缩了。
4. in order to 为了；以便；目的在于；
She arrived early in order to get a good seat.
她早早到场，好找个好位置。
n. 环境，外界
