Constrained chain
[机] 拘束链
🧩 词语组成解析
constrained
[[kən'streind]]
a. 被强迫的, 被约束的, 不舒服的
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
Oh, Grandpa!
啊，爷爷！
What shall I send him for his the New Year?
我要送他什么东西作为新年礼物？
easily obtainable from the lunar rocks in the form of liquid oxygen.
从月球上的岩石中很容易提炼出液态氧，