单词：chemical water treatment
单词：chemical water treatment 相关文章
By Brian Padden Irbil, Iraq 27 September 2007 Recent outbreaks of cholera in parts of Iraq highlight the need for basic services like clean water.Development projects in much of the country have been delayed because of the deteriorating security situ
2007年VOA标准英语（九月）
There are no scare poles ,no pain killing injections needed for this skin cancer treatment ,a harmless cream and a special plaster are all it takes. Inside the device,a tiny LED light activates a drug in the cream to create a toxic chemical that kill
万花筒2010年
[00:07.16]READING [00:07.97]A HEALPING HAND [00:09.14]A Wang Lin is a carpenter who lives in eastern China with his wife and son. [00:12.49]Two years ago, he was diagnosed with tuberculosis. [00:15.33]He was getting weaker and suffered from constant
高中英语人教版必修第三册
[00:07.16]READING [00:07.97]A HEALPING HAND [00:09.14]A Wang Lin is a carpenter who lives in eastern China with his wife and son. [00:12.49]Two years ago, he was diagnosed with tuberculosis. [00:15.33]He was getting weaker and suffered from constant
高中英语人教版必修高三
Coal Industry Blamed for West Virginia Chemical Spill 西维吉尼亚化学品泄漏与煤炭工业 There are new calls for increased oversight of the powerful chemical and coal industries in West Virginia following a major chemical spill that cut of
VOA标准英语2014年(一月)
West Virginia Chemical Spill Leaves Hundreds of Thousands Without Clean Water 美国西维州埃尔克河被污染，影响居民水源 For the fifth consecutive day, 300,000 residents in and around the U.S. city of Charleston, West Virginia, have be
VOA标准英语2014年(一月)