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element n. (pl) 天气, 坏天气; (pl) 基础, 基本原理; 化学元素;元件;要素, 成分, 基本单位; 微量, 少量
eg.a war of the elements 暴风雨
the elements of grammar 语法基础
The elements of physics are difficult to grasp.
物理学的原理难以掌握。
Both hydrogen and oxygen are elements.
氢和氧都是化学元素
advanced elements 先进分子
phrase: an element of sth 少量…，微量…
not the least/no element of sth没有一点…
eg. There is an element of truth in what you say.
你的话有些真实性。
There is not the least /no element of truth in his account of what happened.他对所发生的事情的叙述没有一点真实性。
There's always an element of danger in mountain climbing.
opportunity n.
phrase: have an opportunity to do sth
have an opportunity for/of (doing) sth.有做某事的机会
make the most of an opportunity 尽力利用机会
take/seize/grasp the opportunity to do sth
take/seize/grasp the opportunity for/of (doing) sth
乘机做某事, 抓住做某事的机会
eg. I‘ll have another opportunity to visit the exhibition next year.
明年我们还有一次机会参观这个展览会。
