xyxyxy_123 发表于 2016-7-28 07:40
Less than 35 years after the release of African honeybees outside Sao Paulo, Brazil, their descendan ...
容绮 发表于 2016-7-28 11:35
前半句给出了early 1980s, 这是一个时间标志,后半句说less than ten years later,也就是说 eclipse这个动 ...
容绮 发表于 2016-7-28 11:37
这道题感觉跟时态没什么关系吧,主要是since的用法
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