1. Some groups would get each other's attention by rapping branches with their knuckles, while others did it by loudly ripping leaves with their teeth. 一些群体会通过用指关节敲树枝的方式来互相博取关注，而另一些群体则是以大声撕咬叶子来吸引注意力。
2. Hilton roused him at eight-thirty by rapping on the door. 希尔顿8:30急促地敲门把他弄醒了。
3. He walked through the store, rapping out orders to his staff. 他在商店里一边走一边对他的员工大声发号施令。
4. He likes rapping my head with smile. 他喜欢微笑着敲我的头。
5. A sharp metallic rapping came on the front door. 前门上响起一阵刺耳的金属敲击声。
