Knock indicator
[化] 爆震器
🧩 词语组成解析
knock
[nɑk]
n. 短促的敲打（声）;爆震声;敲击声;敲门（或窗等）声;
vi. 猛烈敲击;与某物相撞;撞到了桌子;
vt. （心）怦怦跳;把…撞击成（某种状态）;批评;
indicator
['ɪndɪketɚ]
n. 指示器;[化]指示剂;指示者;
🗣️ 情景例句
Who's this?
你是谁？
I told him that if he tried to remove the fence it would be over my dead body.
我告诉他，除非我死了不然他从从休想拆掉这道篱笆。
modern states 'invest'in institutions of learning to get back 'interest'
现代国家对教育机构投资，收回的"利息