In April 1944 he was killed on active service.1944年4月他在战时服役中阵亡。An active and expansive market economy is a necessary condition for progress.积极扩张的市场经济是发展的必要条件。The active ingredient in some of the mouthwashes was simply de...
A solution which resists pH changes is known as a buffer solution.能够阻止pH值变化的溶液称为缓冲溶液.It's a kind of glass that resists heat.这是一种耐热的玻璃.It resists the action of acids.它抵抗酸性作用....