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
I have been a poor student of foreign languages.
外语就学得不好。
Do you have a coin for the phone?
你有打电话的硬币吗？
Computers have become smaller and smaller, more and more powerful and cheaper and cheaper.
计算机已经变得体积越来越小，功能越来越多，价格越来越低，