in danger of being harmed, lost, unsuccessful, etc.

Social workers who look after abused or endangered children often have stressful days at work. 照顾受虐或受威胁儿童的社会工作者，每天的工作压力往往很大。

the endangered contracts of failing competitors 与濒临破产的竞争对手所签署的合同

animals or plants that may soon not exist because there are very few now alive

Monarch butterflies are now an endangered species idue to declining numbers.

Fencing is put up to protect the eggs of endangered sea turtles from humans.

The zoo specializes in breeding endangered animals.

Environmentalists claim the project would destroy marshland that is home to many endangered birds.

This area provides habitat for several rare or endangered fish species.