Nonessential amino acid
[机] 非必需氨基酸
🧩 词语组成解析
a. 非本质的\\nn. 不重要的人
a. 氨基的\\n[医] 氨基
🗣️ 情景例句
Now the hard work begins.
艰苦的工作现在开始了。
An inch in a miss is as good as an ell.
错无分大小，有错皆不好。
In fact, I was a bit frightened and didn't know what we should do.
事实上我有点害怕，不知道我们该怎么办。