Upperlips
(upperlip 的复数) 上下唇
🗣️ 情景例句
About 9:30.
大约九点半。
The population of Africa is growing by leaps and bounds.
非洲的人口正在极其迅速地增长。
Knowledge began to increase as soon as the thoughts of one individual could be communicated to another by means of speech.
人一旦能用语言同别人交流思想，知识的积累便开始了。