element

Carbon is the essential element for all known life forms on Earth.

(Chinese) 碳是地球上所有已知生命形式必不可少的元素。

The periodic table lists all the chemical elements known to science.

(Chinese) 元素周期表列出了科学界已知的所有化学元素。

Hard work is a key element in achieving professional success.

(Chinese) 勤奋是获得职业成功的关键要素。

There was an element of truth in his wild stories.

(Chinese) 在他那些荒诞的故事中也有一点真实的成分。