on->in或去掉in
spend的用法:
spend on sth.
spend ..in doing sth
in可以省略
much of the ant's time is spent on combing bits of dirt and debris off their bodies
much of the ant's time is spent on combing bits of dirt and debris off their bodies
這句話哪里錯了
這句話哪里錯了
英語人氣：883 ℃時間：2020-03-31 08:38:30
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