main activity是什么意思
最新回答
狗屎味的小仙女
2020-08-07 22:14:48
[词典] 主要活动;
[例句]For thousands of years chasing down game was the main activity in which humans were involved.
狩猎是数千年中人类从事的主要活动。
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2020-08-07 22:14:48