Microlithic
a. 细石器的
🗣️ 情景例句
because the doctors and nurses are so busy?
因为医生和护士们都非常忙？
Man is mortal.
人生谁无死。
The officer in the control tower was very angry when he heard the news,
控制塔上的官员得知这一消息后，非常气愤，