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
... I care about people, not things.
……我关心人， 而不是东西。
Delays are dangerous.
坐失良机必有忧患。
Work on it had begun before my sister left.
这栋房子在我姐姐离开之前就已动工了，