Knock against
（使）撞击, 击打; 偶然碰到; 磕碰
🧩 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;
🗣️ 情景例句
Lacks tact.
不够机敏。
You'll pay for this.
我会找你算帐！
Harry does not need to be prompted to explain how he bought his precious bottle of mud.
毋须暗示哈里就会向你讲起他买下那瓶珍贵香水泥的经过。