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 ...
Air can be pumped into the diving suit to increase buoyancy.可以给潜水衣充气以增大浮力。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。The likelihood is that the slump will be followed by a per...