Now we're going to make an assumption today and for the next ten weeks or so; so for almost all the class.
现在我们不妨作一个假设,这个假设在接下来的十多周都要用到,差不多是整个课程都要用到
It's much larger than a bacterium, it's ten to 30 microns let's say instead of one to two microns, so almost ten times bigger.
人类细胞比细菌大得多,有十到三十微米那么大而不是一两微米,几乎大了十倍
It's known to Americans who have visited, there are many, but others because that's the Ritz Hotel where what's-her-name, Princess Diana left ten years ago now and never made it, unfortunately for her, out of the Pont d'Alma, the tunnel.
去过巴黎的美国人都知道那个地方,很多人知道旺多姆广场是因为丽兹酒店,十年前逝世的黛安娜王妃曾下榻的酒店,真是不幸,她在穿过蓬德阿尔马隧道时出了意外
So without giving away my age too much-- I guess it will actually--when I was a kid growing up in England, there was this guy - there was a pop star-- a slightly post-punk pop star called Joe Jackson, who none of you would have heard of, because you were all about ten years old, my fault.
虽然我不想透露我的年龄,但也没办法,我从小在英格兰长大,当时有一个流行歌手,他叫乔?杰克森,后朋克歌手,我估计你们都没听说,因为他红的时候你们才十多岁
You'll have weekly - approximately weekly homework assignments that account for 10% of your grade, but they have an impact beyond the 10% because if you can do the homework and you understand the homework, you're going to have no problem with the exams.
你们有个周作业,大约是每周一次,这个作业占总分的百分之十,但这个作业对分数的影响大得多,因为你如果你做了并弄懂了家庭作业,考试就没问题了
Now, the problem, or one of the challenges with clinical trials of vaccines is that you have to enroll a lot of patients into clinical trials because only a few are going to get sick in any case, only 20 out of 100,000.
现在的问题是,这也是疫苗临床试验的挑战之一,临床试验必须包括足够多的病人,毕竟只有一小部分人会被传染,十万人里面只有二十人被传染
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