You'll be relieved to know your jobs are safe.
现在知道你们的工作保住了,可以放心了。
If you don't know your cholesterol level, it's a good idea to have it checked.
如果你不知道自己的胆固醇水平,最好去查一下。
I know your first name, but I don't know your family name.
我知道你的名字,但不知道你的姓氏。
Stay home. Don't you know your poor old mother sits there, night after night, waiting to hear your steps on the stairs?"
VOA: special.2009.07.19
RAM You probably know your computer has something called RAM which is where documents and programs live just temporarily while you're running them 'cause RAM tends to be pretty fast and whereas your hard disk is where programs and files live permanently.
也许你知道电脑有一个,正在使用的程序和文件都暂时存放在那里,而且会加快电脑速度,而硬盘是程序和文件,永久存储的地方。
so you can meet other students, so you can get to know your way around the campus a little bit.
让你能见到其他的同学,可以熟悉一下校园。
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