Incident "means any occurrence, or series of occurrences having the same origin, which causes pollution damage or creates a grave and imminent threat of causing such damage."

“事件”是指造成污染损害或产生会导致这种损害的严重而紧迫的危险的任何事故，或由同一原因所引起的一系列事故。

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The incident fostered grave reservations regarding investment in China, and that is only one such example of this trend.

这样的事件使投资者进入中国有所保留，而这仅是这种趋势中的一个例子而矣。

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Secretary-General Ban Ki-moon's office issued a statement Thursday expressing "grave concern" about the incident, but said U.N. officials lacked details about exactly what had happened.

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He called the incident a "matter of grave concern to the United Nations, " adding that the safety and welfare of civilians must be a top priority in the planning of any military operation.

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In the letter, the foreign secretary makes its clear that the UK has made no decision about the future of the arms embargo but restates the government's view that it may need to be amended, or even lifted, in the event of a "grave deterioration" in conditions or a specific incident.

BBC: UK Politics