The republic's factories have closed for the weekend to conserve energy.为了节约能源，该共和国的工厂周末不开工。They had to conserve the candles now with winter upon them.冬天眼看就要到了，他们不得不把蜡烛省着用。He writes on both sides of the sheet to con...
The republic's factories have closed for the weekend to conserve energy.为了节约能源，该共和国的工厂周末不开工。Conserve your energy, you'll need it!保存你的精力, 你会用得着的！The country starts carrying out new laws to conserve wildlife in t...
Cats miaow when they are unhappy, purr when they are happy.猫不高兴时会喵喵叫，高兴时会发出呜呜声。...a refuge for stray cats.流浪猫收容所Two cats or more in one house will also exhibit territorial behaviour.一家若有两只或更多的猫，也会表现出争夺地盘的行为。We saw two mo...
Apart from selenium and vapour - deposited germanium and silicon, glasses are at least diatomic.除了硒和汽相沉积的锗和硅之外, 玻璃至少是二原子的.Any heteronuclear diatomic molecule must have a dipole moment since its two ends are different.任何异...