一代代繁衍 breed and grow up ->grow and multiple generation after generation
由xxx组成(客观事实) is made up of -> consist of
例子:三沙市由岛屿和暗礁组成 Sansha is made up of islands and reefs -> Sansha,consisting of ... , ...
leave sb. to death 或者 put sb. at risk of dying
所幸,近年来人们的环保意识不断提高,改善了部分海洋环境,那里的珊瑚礁也渐渐重现往日生机会
我写的:Thanks to the improvement of people's awareness of protecting environment, the ocean environment has been enhanced, where the corals have been brought to life again.
the improvement of people's awareness of protecting environment->the growing awareness,of environmental protection
the ocean environment has been enhanced(用的不恰当,不自然)->the marine environment has improved
where the corals have been brought to life again.这里的 where 指代的是 the ocean environment,逻辑通顺,但定语从句略显生硬,可以单独成句更清爽
得名于 under the name of(用法不当,原意是用...的名字或者以...为名义) -> get its name from ...
还可以用get its name for (eg:being perpetually white almost all year long )