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...
Portugal and Spain had possessed vast empires that waxed and waned.葡萄牙和西班牙都曾是经历了兴衰的大帝国。Britain does not agree and neither do Denmark, Portugal and Ireland.英国不同意，丹麦、葡萄牙和爱尔兰也持反对意见。Portugal will probably have a small curren...