Gravitometer
重差计(测定比重用)
🏥 医学释义
比重计，比重测定器
🗣️ 情景例句
Simply this.
简单说来是这样的。
I'm practising tai chi chuan in the park.
我在公园打太极拳。
Haven't you heard of him? He's a very famous singer. He's singing at the New Theatre on Saturday.
你没听说过他吗？他是个著名歌手。他星期六将在新剧院演出。