Backbone chain
[化] 主链
🧩 词语组成解析
chain
[tʃen]
n. 链子，链条;连锁，连续;拘束;连锁店或旅馆系列的事物;
vt. 用铁链锁住;监禁，束缚;
🗣️ 情景例句
That's irrelevant.
那不相干。
I will keep you posted.
我会与你保持联络。
Not all sounds made by animals serve as language.
动物发出的声音不都是用作语言交际。