They pose a serious threat to security.
他们对安全构成严重威胁。
This maternal health and fetal development will pose a serious threat.
这对孕妇健康和胎儿发育都会造成严重威胁。
In themselves, the few thousand men in question will not pose a serious threat.
本身几千名在考虑中的军人都不会构成严重威胁。
S. alone and currently pose a serious health threat throughout many parts of the world.
目前流感病毒使世界多个地区受到严重的健康威胁。
S. alone and currently pose a serious health threat throughout many parts of the world.
目前流感病毒使世界多个地区受到严重的健康威胁。
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