Aerohydrodynamics
空气流体动力学
🗣️ 情景例句
I know who you are.
我知道你是谁。
What shall I send hin for his anniversary?
我要送他什么东西作为周年纪念礼物？
There is a broken small old gray stone bridge over the river.
河上有一座破烂不堪的、古老的、灰色的小石桥。