The most popular one is that they may contain visitors from other planets.

最常见的一种说法是它们可能包含来自其他行星的访客。

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Most limestone and sandstone aquifers are deep and extensive, but may contain groundwaters that are not being recharged.

大多数石灰岩和砂岩的蓄水层很深并且规模很大，但是它们含有的地下水可能是当前无法再生的。

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The developing brain, the report says, is particularly vulnerable to the toxic effects of certain chemicals these products may contain, and the damage they cause can be permanent.

报告说，正在发育的大脑特别容易受到这些产品里可能含有的某些化学物质的毒性影响，而这些化学物质造成的损害可能是永久性的。

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But counterfeit drugs may contain too much, too little or none of the active ingredients of the real thing.

VOA: special.2010.02.22

Some of these books which we think are roughly from a certain date, they will contain narrative snippets or legal materials or oral traditions that may even date back or stretch back further in time, and they were perhaps transmitted orally and then ended up in these written forms.

有些篇章只是被我们粗略地认为出现于那个年代，其中包含的故事片段或律法材料或口头传统,其实也许能够追溯到更久远，所以这些很可能一开始是被口头传播,后来才用文字形式记载的。

耶鲁公开课 - 旧约导论课程节选

The tissue may contain evidence of the virus or bacteria that caused the person to die.

VOA: special.2010.06.29

That figure is compiled from six sources, and may contain some redundancy, Giuliani has said.

CNN: Giuliani: Beware con artists

It has water, it may contain life, and it could eventually sustain a human colony.

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Mixed drinks may contain more than one serving of alcohol and take even longer to metabolize.

CNN: Alcohol poisoning