查询词典 asteroids

Perhaps, extinctions are caused by something outside, like comets and asteroids.

也许，灭绝是由外来物体引起的，比如彗星和小行星。

Since there are some disadvantages, such as magnitudes, reference systems and difficulties in observing an asteroid during its motion in its whole orbit, etc., when the asteroid is observed simply by means of the meridian or photograph methods, a new method for observing asteroids with a lower latitude meridian circle and a CCD measuring device is proposed according to the conditions of the geographic latitude of the Yunnan Observatory which can be used to observe the whole orbit of an asteroid.

考虑到单纯用子午方法或照相方法对小行星进行观测存在着因星等、定标星系统，以及难于在小行星运行全轨道上进行观测等方面的不利因素，在本文中，根据云南天文台能观测小行星全轨道的地理纬度条件，提出利用低纬子午环与CCD测量装置相配合，并利用低纬子午环直接提供的定标星，在一个统一的基本仪器系统中，通过对小行星在全轨道上均匀分布的观测，获得高精度的小行星观测资料，以便得到更准确的星表零点改正。

The Earth was made by the collision of billions of planetesimals, chunks of rock and ice much like today's asteroids and comets.

地球是由像现在的行星和彗星一样大块的岩石和冰块组成的数十亿的小行星碰撞而形成的。

The Earth was made by the collision of billions of planetesimals, chunks of rock and ice much like today's asteroids and comets.

地球的形成是由亿万小行星体，岩石及冰块的的的碰撞产生，就象现在的那些行星和彗星。

The Earth was made by the collision of billions of planetesimals, chunks of rock and ice much like today's asteroids and comets.

地球是由数十亿记的小行星碰撞所形成的，巨石和冰块更像是今天的小行星和彗星。

The Earth was made by the collision of billions of planetesimals, chunks of rock and ice much like today's asteroids and comets.

地球是由于亿万的小行星体、岩石块和冰块之间碰撞产生的，很象现在的小行星和彗星。

The Earth was made by the collision of billions of planetesimals, chunks of rock and ice much like today's asteroids and comets.

地球的形成得力于上百万的如今之行星、彗星的星子、大石块和大冰块的碰撞。

The Earth was made by the collision of billions of planetesimals, chunks of rock and ice much like today's asteroids and comets.

地球是由数十亿颗星子（即由大块岩石、像今天的小行星和慧星般大小的冰组成）碰撞而成。

But there are also thousands of asteroids whose orbits put them on a collision course with Earth.

然而仍有数以千计的小行星，其运行轨道使其处在与地球相碰撞的位置上。

I'm gonna go pack my regular, long bathing suit.

我要去打包我那不起眼的超长泳裤

Random number generators are used in many areas, with the improvement of the computational ability of the computer.

随着计算机计算能力的不断提高，随机数发生器在许多领域有了更加广泛的应用。