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16、 back out
1) 退出
A: Wasn’t Bert supposed to sing tonight?
B: Yes、 but he backed out at last minute
2)不履行
She finally backed out of her promise.
17、 be cut out for 天生适合
I’m not cut out to be a hero.
18、 be absorbed in
She has been absorbed in a horrorfiction. I can’t tear her away.
19、 be addicted to 对……上瘾
She has been addicted to drugs for years.
20、be attached to 对……有感情
A: I’m amazed that you are still driving that old car of yours. I thought you would have gotten rid of it years ago.
B: It runs well and I’ve actually been quite attached to it.
adj. 一心一意的；被吸收的 v. 吸收；使全神贯注（
