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
and work begins at eight in the morning for me.
早晨八点我就得开始工作。
I'm the best girl in my class.
我是我的班级中最好的女孩。
They then knew that they had discovered the cause of the fire.
这时调查人员知道他们找到了发生火灾的原因了。