单词：self-desludging clarifier
单词：self-desludging clarifier 相关文章
A: The plumbing in my new apartment is not working. B: I need you to tell me what the problem is. A: The bathroom sink is stopped up. B: Is the kitchen plumbing messed up also, or just the bathroom plumbing? A: Just the bathroom plumbing seems to hav
地道英语对话-租房
By Dan Robinson Capitiol Hill 16 March 2007 Former undercover CIA officer Valerie Plame, who has been at the center of a controversy involving the role White House officials played in revealing her identity, has testified in public for the first tim
2007年VOA标准英语（三月）
By Mike O'Sullivan San Francisco, California 18 April 2007 San Francisco is a city built atop steep hills, and many say the city should be seen on foot. Mike O'Sullivan reports that volunteer guides share their love of San Francisco on walking tours
2007年VOA标准英语（四月）
Scientists at the Massachusetts Institute of Technology have turned to Mother Nature for inspiration, inventing a device that mimics photosynthesis, the process plants use to convert sunlight and water into usable energy. MIT chemistry professor Dani
VOA标准英语2011年(四月)
A: I just moved into my apartment, and the plumbing is not working. B: Can you describe the plumbing problems you are having? A: The bathtub barely drains at all. B: Okay, the bathroom plumbing needs looking at. What about the kitchen plumbing? A: Ne
地道英语对话-租房
A: I am having some plumbing problems and need them fixed. B: What exactly is wrong with the plumbing? A: The toilet flushes really slowly. B: Are there any problems with the plumbing in the kitchen? A: Both the kitchen and the bathroom plumbing are
地道英语对话-租房