Until this week Saturn's small moon Rhea was the only known solid space object thought to have a ring. (Other known ringed bodies, such as Saturn, are mainly gaseous.)

直到本周土星的小卫星土卫五还被认为是唯一具有环的立体空间物体。(其它已知有环的天体，例如土星，大部分是气态的。)

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If you think about an object, you have a thought, not an object.

如果你在思考某一个对象时，你大脑里只有一个思想，而不是一个对象。

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I started wondering about what object oriented programming was and I thought Erlang wasn't object oriented, it was a functional programming language.

我开始想知道面向对象编程到底是什么，而且我认为Erlang不是面向对象的，它是函数式编程语言。

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However, the monks - who carried out "one-point" meditation, where they focus attention on a single object or thought - were able to focus on one image.

BBC: NEWS | Health | Meditation 'brain training' clues

While 1km-size and bigger asteroids are thought to hit only once every 500, 000 years, on average, rocks 50-100 metres across, like the Tunguska object, are thought to hit the planet once every thousand years.

ECONOMIST: A large asteroid sweeps by Earth. Where are the others?

It has long been thought that the lunar body resulted from an impact between the early Earth and another planet-sized object 4.5 billion years ago.

BBC: Moon formation: New spins put on old questions