After half a year's training ,they were made entir

发布时间：2021-02-28 01:15:01

After half a year's training ,they were made entirely used

网友回答

to used to 适应于...
经过多年的训练,他们已经完全适应在水下
======以下答案可供参考======
供参考答案1:
to 习惯于供参考答案2:
填to; be used to sth习惯于某事，这里是适应的意思
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