Lock hierarchy
[计] 锁分层结构
🧩 词语组成解析
lock
[lɔk]
n. 锁;水闸，船闸;（机器部件等的）锁定;一把，一撮;
vt. 锁上;锁好，关好;使固定;隐藏;
vi. 卡住，不动;纠结;僵硬不动;
🗣️ 情景例句
Does this come with a certificate of authenticity?
这有鉴定证明吗？
We have thirty minutes to kill.
我们有三十分钟空闲时间。
The instrument was bought by my grandfather many years ago.
是我祖父在很多年以前买的。