1、It goes without saying that oxygen is the most active element in the atmosphere.
不言而喻，氧氣是大氣中最活躍的元素。

2、An active element that forms a character or symbol when combined in a matrix.
形成一種性格或者符號的有效元件被在基體里結(jié)合。

3、Competition mechanism is the most active element of market economy.
競爭機制是市場經(jīng)濟中最活躍的要素。

4、Vocabulary is a dynamic and open system, and the most active element in language.
語言中的詞匯是一個動態(tài)的開放性系統(tǒng)，是語言中最活躍的因素。

5、I think the methodology is aimed at making the pupil an active element in the classroom.
我想，這一套方法的目的在于讓小學(xué)生成為課堂上的活躍元素。

active element翻譯