Alston said the United States should explain who is running the program and what precautions are being taken to ensure that these weapons are used within the framework of international law.

VOA: standard.2009.10.27

And what that means it's there's all sorts of precautions and procedures you take that are special when you deal with these.

这意味着当你与它们打交道的时候,你需要做各种各样特别的防范措施与流程。

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