After half a year's training ,they were made entirely used___underwater
问题描述:
After half a year's training ,they were made entirely used___underwater
答
填to; be used to sth习惯于某事,这里是适应的意思
答
to 习惯于
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