最近我在你们公司买了一把办公椅，但是我在大约一个星期前把它退了。
I recently bought an office chair from your company, but I returned it about a week ago.
他还说网站两个星期前刚打退了一次类似的袭击。
The site fought off a similar attack two weeks ago, he said.
5年前，美国的楼市就开始衰退了，目前还未停止衰退。
The American housing market began to decline half a decade ago and hasn't stopped yet.
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