那些可威胁生命的疾病数目，尤其对于那些微弱的免疫系统，预期会增加。

The number of illnesses, which can be life-threatening, especially to those with weakened immune systems, is expected to increase.

youdao

溃疡破坏动脉将导致另一个主要的并发症-出血，出血可威胁生命，而慢性失血将导致缺铁性贫血。

Erosion of the ulcer into the artery will lead to another major complication of ulcers — hemorrhage. This hemorrhage can be life threatening. Chronic blood loss may lead to an iron deficiency anemia.

youdao

矮林作业是可持续的，不会对环境构成威胁。

Coppicing is sustainable and doesn't threaten the environment.

youdao

She says nothing after this encounter, remaining silent or speechless for the rest of the mask, but Milton clearly finds, I think, something threatening here.

在这次相遇中她什么都没说，在接下来中也保持着沉默寡言，可我认为弥尔顿在这里找到了一些威胁。

耶鲁公开课 - 弥尔顿课程节选