Though Sybbis complained bitterly, Mama would not let up on her.尽管西比斯大发牢骚，但妈妈不会放她一马。Mama met me at the station.妈妈在车站接我。Mama made him clean up the plate.妈妈要他把盘子洗干净。...
We tested the boat for its buoyancy.我们测试了这条船的漂浮能力。...a mood of buoyancy and optimism.乐观愉快的心情I'll have to take stock, go carefully and regain my buoyancy.我将不得不审时度势，小心行事，同时保持乐观。Air can be pumped into the diving suit ...