being exposed to sunlight for a long time is harmful to ones skin
这是为什么用being exposed 不能用exposed
人气：440 ℃ 时间：2020-05-14 11:44:26
解答
expose oneself to 暴露于
应该是expose ones skin to sunlight
改成被动句就变成了being exposed to sunlight for a long time is harmful to ones skin
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