...the discovery of the ozone hole over the South Pole...南极上空臭氧洞的发现...heavy, rain-laden clouds scudding across from the south-west.乌黑的雨云从西南方向掠过North and South will remain separate entities within a commonwealth until the...
Builders must fasten down roofs of newly-built homes more securely.建造工人必须把新建房屋的屋顶固定得更牢靠些。1.4 million council homes have been sold, mostly to sitting tenants.已经出售了140万套廉租公房，大部分购买者都是房子的承租人。Thousands are desperately trying ...
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...
Objective : To explore and analyse ther eason preventive measure of portal hypertension gastrobrosis after devascula rization.目的: 探讨门奇静脉断流术后胃破裂的原因和防治措施....