Non-essential element
[化] 非必需元素
🧩 词语组成解析
non
[[nɔn]]
adv. 非, 不
element
['ɛləmənt]
n. [化]元素;要素;原理;[电]电阻丝;
🗣️ 情景例句
You drive a hard bargain.
你真会讲价。
See you later.
待会儿见。
One man was told to fix up an air-line to provide compressed air for the machines they were using.
有个工人被派去安装"供气管"，给他们正在使用的机器提供压缩空气。