Most of the big planet announcements over the past year or two have come from the Kepler space mission, which looks for the slight dimming as a planet passes in front of its star.

在过去一两年中，大部分发现大型植物的公告是来自开普勒太空任务，其方法是搜寻植物在太阳前经过时那稀薄的浅影。

youdao

But I existed in a world apart, a special realm whose mission and identity depended on preserving the time-honored traditions of the past.

我处在这个世界的裂缝里，在这个特别的领域内，艺妓的使命和身份就是维护悠久的历史传统。

youdao

The basic Rational mission has remained largely unchanged for the past decade.

插图在过去的十年里，Rational 的基本使命没有什么变化。

youdao

Assange has been effectively confined for the past two months to the diplomatic mission -- a suite of rooms covering half of one floor of a townhouse in a posh London neighborhood south of Hyde Park.

CNN: Julian Assange demands U.S. end WikiLeaks 'witch hunt'

We've maintained rotations like this in the past - even nation building in South and Central America - where we've kept the mission going by rotating guardsmen on three week cycles, and overlapping them, or rotating them in on a little bit longer cycles.

NPR: Critics Question Using Nat'l Guard Troops at the Border

Way back in November of 1985, on just its second mission, Atlantis experienced a blow-back of hot gases past the primary O-rings in one of its solid rocket boosters, resulting in serious erosion of said O-ring.

ENGADGET: Space Shuttle Atlantis ends its run of predicting disaster for other NASA shuttles