单词:effective specific surface area
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Hello,everyon [00:06.56]Today,we'll talk about another planet,Mar [00:24.76]Mars is one of the planets in the solar syste [00:40.96]It is the forth planet from the su [00:54.54]It is named for the Roman god of wa [01:09.28]because it appears fairly r
New Generation Revolutionizes Environmental Activism Environmental activists have relied on public pressure, boycotts and confrontation to advance their cause over the past few decades. Now, a new generation of eco-warriors is revolutionizing environ
While it may appear to be a completely chaotic place, 虽然它看上去好像是一个很混乱的地方, when you see it from above, there seems to be a whole grid of waterways and canals connecting each and every home. 但当你从上往下看,那
33 阿波罗登月计划(三) DATE=4-25-01 TITLE=EXPLORATIONS #1949 - PROJECT APOLLO, PART 3 TYPE=SPECIAL ENGLISH FEATURE BYLINE=MARILYN RICE CHRISTIANO ANNCR: EXPLORATIONS -- A PROGRAM IN SPECIAL
I think food is such a great subject, such an interesting subject. I mean, food is something that everyone has to do. It's a life necessity, and actually because of that it can be a real hassle, like when you have to eat when you're hungry but you re