The seas grew turbulent, tossing the small boat like a cork.海浪变得汹涌澎湃，把小船像漂浮的软木塞一样抛来甩去。a short and turbulent career in politics短暂动荡的政治生涯The present international situation remains tense and turbulent.当前的国际局势依然紧张动荡....
This island is maintained as a sanctuary for endangered species.那个岛继续作为濒危物种的保护区.Pandas are an endangered species.熊猫是濒危物种。The giant panda has become an endangered species.大熊猫已成了一种濒临灭绝的动物....