I sent out the samples four days ago.

我们两天前收到了他的样品。

youdao

"He ran away from home four days ago," says his uncle, who came to claim the body.

他四天前刚才家里逃出来，这是他的第一份工作。

youdao

I was liberated four days ago, and am on my way to Pontarlier, which is my destination.

出狱四天了，现在我要去蓬塔利埃，那是我的目的地。

youdao

A few days ago, we asked four teenagers who arrived in August to discuss their experience so far.

VOA: special.2009.11.05

Cambodia says the Thais started shooting four days ago, but an unnamed Thai military source said it had been "a misunderstanding".

BBC: Thai-Cambodia border fighting enters fourth day

Four days ago the market was short-term oversold beneath 21-day moving averages to a degree that almost guaranteed an oversold rally.

FORBES: Has The Market Lost That Oversold Feeling?

The arrests were made four days ago and the suspects were being investigated before being handed over to judicial authorities, Mr Turki said.

BBC: Saudi Arabia arrests 18 for spying