setting off

n. 断流(关闭)

例句与用法：

By now, a rocket will have set off on its35 million mile trip to Mars and scientists must be waiting anxiously for the results.

此刻，一枚火箭可能已经出发，踏上飞向火星的3,500万英里的旅程，科学家们一定在焦急地等待着结果。

Setting off firecrackers is seen not merely as a nuisance, but also as a big threat to man's life and property.

燃放鞭炮不仅仅被看作讨厌的事，而且还被认为是对人的生命财产的严重威胁。