Keyways
(keyway 的复数) n. 扁形钥孔, 键沟\\n[化] 键槽
🗣️ 情景例句
I've been trying
我一直努力
Cheek brings success.
和气生财。
The most wonderful piece of machinery on show was Nasmyth's steam hammer.
其中最奇妙的是内史密斯的蒸汽锤。