单词：
单词： 相关文章
06 Working in a Laboratory lab laboratory; a place where scientists and engineers work, conductingexperiments and tests* Students have to wear protective eyeglasses whenever they go into the lab. colleague co-worker; a person whom one works with, usu
2010年ESL之商务英语
[00:02.09]What causes the pollution? [00:04.18]All sorts, chemicals, plastic, rubbish,oil. [00:08.11]Most of them comes from industrial [00:09.85]and agricultural waste. [00:11.80]It sounds like a big problem. [00:13.43]Yes, it is a big problem. [00:
北师大版高中英语模块3
Millions of people worldwide have been reported missing. Many of them went missing as a result of armed conflicts, such as the war in Syria, or in other places of violence. Large numbers of people disappear after natural disasters. A new laboratory e
2017年VOA慢速英语(十一)月
Voice 1 Welcome to Spotlight. Im Liz Waid. Voice 2 And Im Joshua Leo. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 Imagine that you are sitting down to
环球英语 Spotlight
OTTAWA, Aug. 27 (Xinhua) -- Canada's Prime Minister Stephen Harper announced Monday that Lieutenant-General Thomas Lawson has been appointed as Canada's new chief of the defence staff, the country's top military post. Lawson, who assumed the position
英语新闻
By Meredith Buel Washington 05 December 2007 The U.S. Departments of State and Defense have agreed to a new system of rules designed to increase control over private security contractors working in Iraq. VOA correspondent Meredith Buel reports from W
VOA常速英语2007年（十二月）