Petrostroma
石质海绵属
🗣️ 情景例句
After he eats!
等他吃饱了！
I ask him to tell me the details about everything.
我要求他告诉我每件事的细节。
riding on its air cushion over a single rail, which it never touches,at speeds up to 300 m.p.h.----the possibilities appear unlimited.
靠气垫在单轨上行驶而不接触轨道，时速可达每小时300英里。气垫船的前途是不可限量的。