问题描述：
问一个英语语法现象
Additionally,because sound propagates so well in water,whales can be heard underwater much farther than they can be seen,which increases the range over which they can be detected.
这句话的最后一个which在句子中担任什么成分
Additionally,because sound propagates so well in water,whales can be heard underwater much farther than they can be seen,which increases the range over which they can be detected.
这句话的最后一个which在句子中担任什么成分
问题解答：
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