1·They pose a serious threat to security.
他们对安全构成严重威胁。
—— 《牛津词典》
2·Global warming has posed a serious threat to the survival of animals such as polar bears.
全球变暖对北极熊等动物的生存造成了严重威胁。
3·Local officials are using the levers that are available to them to safeguard residents' health in the face of a serious threat.
面对严重威胁，地方官员正在利用现有手段保障居民的健康。
4·The report also highlights incidents of fishing boats being involved in groundings, oil spills and accidents, which posed a serious threat to the Antarctic ecosystem.
这份报告还强调了渔船搁浅、石油泄漏和意外事件，这些事件对南极生态系统构成了严重威胁。
5·This is a very serious threat to us.
这对我们是一个严重威胁。
6·A serious threat?
这是一个严重的威胁吗？
7·The most serious threat is that of geological disasters.
最严重的威胁是地质灾害。
8·That is a more serious threat as EU energy-market liberalisation takeshold.
而这一点，随着欧盟能源市场自由化的全面展开，对Gazprom形成了比财政更为严重的威胁。
9·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。
10·The most serious threat, however, is the loss of warm water due to habitat loss.
而最严重的威胁是温水的减少导致的栖息地流失。