Health professionals know that they may be at a tipping point with this outbreak.

卫生专家们知道，他们可能正处在霍乱爆发关键性的转折点。

youdao

She and other scientists are researching whether there might be a 'tipping point' for Arctic sea ice -a point at which sea ice will disappear and never recover, even if the climate cools.

她与同事致力于研究对于北冰洋上的海冰是否存在一个不可逆转的“消融点”，一旦达到该点即使气候转凉海冰也无法恢复原来的覆盖量。

youdao

Even the National Security Space Office at the Pentagon is worrying about whether a tipping-point has been reached, or soon will be.

甚至美国五角大楼的国家太空安全办公室也在担心：[碎片灾难]的临界点是已经到达呢，还是将要到达。

youdao

The increasing prevalence of free access at hotels seems to be at a tipping point.

BBC: The business travel benefits of cloud computing

The industry, which has seen mega-acquisitions from companies like Oracle and SAP, appears to be at a tipping point.

FORBES: Appirio Raises $60M to Take on Accenture

Not because it would be too difficult, says Aaron Portnoy, a researcher at the security vulnerability tracking firm Tipping Point, but because it would be too easy.

FORBES: The iPad: As Insecure As The iPhone