/nɑːkt/
动词
（反复地）敲，击，打
She knocked on the window to attract his attention.
她敲敲窗想引起他的注意。
碰，撞；碰倒；撞倒
Who knocked over that mug of coffee?
谁打翻了那杯咖啡？
想跟读，去练习
