n.趾下垂，垂趾
He coaches people for TOEFL examinations.
他指导人准备托福考试.
His English was good enough for him to pass the TOEFL.
他的英语够好的了,可以通过托福考试.
I've been out of circulation in order to prepare for the TOEFL.
为了准备托福考试,我已经不从事社交活动.
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