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词组 to be present in sth
释义
to be present in sth存在于某物中

The bacterium is naturally present in large numbers in the intestine.这种细菌大量地自然存在于肠道内。

This form of vitamin D is naturally present in breast milk.这种形式的维生素D天然存在于母乳中。

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更新时间:2024/9/21 15:35:55