The astronauts had planned to re-open the door during their four-day flight.

VOA: special.2009.06.24

And you can open up this cabinet and you can see four months.

打开橱柜,你可以看到四个月。

普林斯顿公开课 - 国际座谈会课程节选

and then there's one eating club that's famous for being open until, like, four am,

有一家饮食俱乐部以营业到凌晨四点而出名。

有趣的吃东西协会 - SpeakingMax英语口语达人

But three of the four vents remain open,still spewing thousands of barrels of oil to the surface.

VOA: standard.2010.06.08

You drive your car in, it shows you by the arrows where you go, you stop at window one to make your order and pay, and then you go to window two to collect your food, and they're open twenty-four hours.

你开车进来,沿着箭头指示,直到第一个窗口停下,点单,付账,再开到第二个窗口领取食物,他们是二十四小时营业的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Also a nearby volcano erupted four years ago,ripping open a crack in the Great Rift Valley.

VOA: standard.2009.12.14