This special form of vitamin D is naturally present in breast milk.

这种特殊形式的维生素D天然存在于母乳中。

《柯林斯英汉双解大词典》

Not all chemicals normally present in living organisms are harmless.

并非所有正常存在于活的有机体中的化学物质都是无害的。

《柯林斯英汉双解大词典》

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Several different species of coral can be present in the different colonies that form the reef structure.

VOA: special.2010.08.10

So, that's present in all of these moments, but--equally present-- I want to get back to this sense of blankness.

所以它在这些时候都被呈现了出来，而且是同等地呈现了出来-,让我们回头看看,这种空无一物的感觉。

耶鲁公开课 - 1945年后的美国小说课程节选

when you allow yourself to be present in situations and be surprised from them, you know.

那是当你把自己放在一种情境下，让自己感到惊奇的时候。

艺术从自由起步 - SpeakingMax英语口语达人

The Nottingham-born forward was ever-present in Southampton's Championship campaign last season, scoring 12 goals.

BBC: Forest capture striker McGoldrick

We could be underestimating this as speculative activities were largely not present in 1990-91.

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They found that micro RNAs, (miRNA) present in rice could suppress the expression of human genes.

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