tip over the edge

What’s more, there is probably not enough conventional oil left to tip the climate over the edge.

更甚者，我们可能已经没有足够的传统石油将气候从危险边缘挽回了。

However, if somebody already has cardiovascular disease, then it might just tip them over the edge and trigger a heart attack.

但如果有的人本来就有心血管疾病，那这就可能把他们逼到临界点，导致心脏病发作。

Improved relations with employees could not save the company from entering bankruptcy in September 2005, however, when surging fuel costs helped to tip Delta over the edge.

燃油成本飙升让德尔塔在破产边缘垂死挣扎，劳资关系虽然得到了改善，公司并未因此获救，反而于2005年9月选择破产。