Biface
n. (旧石器时代的)两面器(即两面加工的一种石块, 为手斧的雏型)
🏥 医学释义
双界面
🗣️ 情景例句
Hello, Mr. Carlson.
哈喽， Carlson先生。
Our foreign trade policy has always been based on equality and mutual benefit and exchange of needed goods.
我们的对外贸易政策一向是以平等互利、互通有无为基础的。
He ate simply, and never ate meat. He rose early in the morning and worked at his wheel, making cotton thread.
他吃得很简单，且从不吃肉。他每天早晨早早就起床，转动纺车，纺棉纱。