Neumolithiasis
肺石病
🗣️ 情景例句
Stay ... stay.
再待一会儿……再一会儿。
Kept waving to her mother until the train was out of sight.
不断地冲她的母亲挥手，直到火车驶出了视线。
To serve the people well, I study hard.
为了更好的服务于人民，我好好学习。