Ozone is formed in the stratosphere and mesosphere by photochemical processes.由于光化过程,在平流层与中层内产生了臭氧.The mesosphere comprises the rest of the mantle below the asthenosphere.中间圈包括岩流圈以下地幔的其余部分....
他首先得弄清一些基本事实。He first had to get hold of some basic facts.弄清他在干什么是重要的.It's important to find out what he is doing.这些注释有助于弄清文中最难懂的部分.The note help to elucidate the most difficult parts of the text....
尽管矿井的安全状况有了很大改善，矿工的家属仍然害怕最糟的情况会发生。Though mine safety has much improved, miners' families still fear the worst.9.4%的通货膨胀率是8年来最糟的。Inflation at nine point four percent is the worst for eight years.在最糟的情况下,他们也不过损失15只羊.T...
Modeless dialogs are less common than their modal siblings.另一种对话框称为“非模态对话框”,它不如同胞姐妹模态对话框那么常见.Many modeless dialogs are implemented awkwardly. Their behavior is inconsistent and confusing.大多数非模态对话框实现得很笨拙, 它们的行为很不一致,令人十分困惑...
没人知道火车为什么会脱轨。No-one knows why the train derailed.火车脱轨栽进了河里。The train derailed and plunged into the river.火车头在拐弯处脱轨.The engine of the train left the rails at a curve....
顶盖必须用焦油纸或塑料封闭.The pit cover should be sealed over with tar paper or plastic.泥煤焦油的性质和由木材干馏所得到的焦油的性质相似.Peat tar has similar properties to the tar derived from the destructive distillation of wood.以工业副产物木素磺酸和焦油酚为主要原料研制出一种新的...