Listen to the biography of Natalie Portman.听NataliePortman的传记.When Doctor Portman read this portion of the letter his voice faltered.读到信的这部分,波特曼博士的声音发抖了.Old Doctor Portman was one of the few who came from the venerable g...
在冷却系统里加防冻剂以防止霜冻.Fill the cooling system with antifreeze as a protection against frost.DEG是 一种溶剂,一般用作生产防冻剂.DEG is used in antifreeze and as a solvent.选择乙二醇作为钻井液的防冻剂可以满足勘探钻进工作的要求.Choosing ethylene alcohol as antifreeze can...
你这样无精打彩, 我敢说我要赶得上你了.You're so low, I dare say I shall keep up with you.他们无精打彩,垂头丧气.They bowed their heads and cast down their eyes.早餐时,他无精打彩,只吃了一点咸肉和鸡蛋.He pecked listlessly at his breakfast of egg and bacon....