Roller chain
[机] 滚子链
🧩 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
Are the bathrooms on this train clean?
火车上的卫生间干净吗？
I can't help myself.
我情不自禁。
We ate our sandwiches and a bar of chocolate each and began to feel better.
我们俩都吃了三明治和一块巧克力才感到舒服些了。