词：cut-throat
英英释义：a cut-throat activity or situation is one in which people behave in an unfair or immoral way in order to get an advantage over other people
例句：The smartphone business is cut-throat.
1）翻译下面的句子：
在这个竞争激烈的世界，只有适者才能生存。
In such a highly cut-throat world, it is the survival of the fittest.
参考：In this cut-throat world, only the fittest will survive/prevail.
造句：
背景：即便在一个激烈的竞争，依然会存在一些规则。然而这些规则无关于道德，而只关乎利益 。
句子：
Even in a cut-throat competition stands a couple of rules, which has nothing to do with morality, but is merely a matter of interests.