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 ...
玛丽存了几块布留作棉被用.Mary saved up pieces of cloth to make a quilt.做杂拼花布棉被是利用零碎布料的好办法.A patchwork quilt is a good way of using up scraps of material.实在太暖和, 阳光并非正中的照着,斜斜对正棉被.It was too warm. Sunlight was slanting on to the quilt....