His mood changed too. he became increasingly introspective, and the dry humour became less and less visible . 他的心情也改变了。他变得越来越内向了，连那一板正经的笑话也越来越少见了。
The advantage of vacuum oven is that lower drying temperatures are used which decrease the deterioration of the dry matter . 真空烘箱法的优点为采用较低的烘干温度，从而减少干物质的变质。
But occasionally the sky darkens, the air becomes heavy, and a cool torrential rain fills the dry gullies . 可是有时天空也会突然转暗，空气变得浊重，接着就是一场急骤的冷雨倾注到干涸的沟壑。
The drying of wet polymer particles with solvent recovery is an operation which may see wide use in the plastics industry . 干燥湿的聚合物颗粒并把溶剂回收是在塑料工业中有广泛用途的一种操作。
drying at 103℃ ensures the removal of all free water, provided that the drying period is long enough, and minimizes the loss of other water. 若在103烘干足够长的时间，就能确保除去全部的游离水，并可使其它水的损失降到最少。
We have to economize on water during the dry season 我们在旱季不得不节约用水。
The dry river - bed finds no thanks for its past 1干涸了的河床，不感激他的过去。
The dry river - bed finds no thanks for its past 干涸的河床，并不感谢它的往昔。
We sat on the dry grass with our backs to the wall 我们背靠着墙壁，坐在干草上。
The dry river - bed finds no thanks for its past 枯竭的河床，并不感谢它的过去。
