我每周去健身房三或四次，这让我变得更加健康苗条。
I went to gym three times or four times every week, then I was more skinnier and healthier.
他们已经融合在冶炼厂粉釉在摄氏800度，然后把物体，重复这个过程三或四次，直到其表面变得光滑。
They have to fuse powdery glaze in the smelter at 800 degrees centigrade, then take the object out and repeat the process three or four times until its surface becomes smooth.
在越战中，大多数士兵只执行一到两次任务，可是在伊拉克和阿富汗的战场上，很多美国陆军海军已经执行了三或四次任务。
Most soldiers spent just one or two assignments in Vietnam, but many American soldiers and Marines are on their third or fourth tours in Iraq and Afghanistan.
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