The bags have tough exterior materials to protect against knocks, rain, and dust.
这些袋子结实的外层材料有防撞、防雨、防尘的作用。
Furthermore, if the water ice was mixed in with rock and dust, it would be protected from evaporation.
此外，如果水冰与岩石和灰尘混合在一起，它就不会蒸发掉。
Planets are believed to emerge from the accretion of particles in a disk of gas and dust as they whirl around the star.
行星被认为是由围绕恒星旋转的气体和尘埃组成的圆盘中的粒子累积而成。
Ultraviolet radiation and violent stellar winds have blown out an enormous cavity in the gas and dust enveloping the cluster.
紫外线和猛烈的星际风，在气体以及包裹星群的灰尘上吹出了一个硕大的洞。
They are found also in air and dust.
它们也存在于空气和灰尘中。
As the comet nears the sun, its ice melts, releasing gas and dust that stream away into space.
当彗星靠近太阳时，它的冰层融化，释放的气体和尘埃飘向太空。
Strap on your dancing shoes and dust off your hula hoop—workouts with a theme will be more popular than ever in 2010.
绑上你的舞鞋，掸掉呼啦圈上的灰尘——在2010年有主题的锻炼将比以往更受欢迎。
When I ride my motorcycle I keep my mouth closed to keep bugs and dust out.
我骑摩托车时会闭上嘴巴，以免虫子和灰尘进入嘴里。
On the left, marked by red gas and dust clouds, is irregular galaxy M82.
左边，以红色气体和尘埃云为标志的，是不规则星系m 82。
He traveled homeward through a region made barren by drought and dust storms.
他穿过一片由干旱和沙暴造成的荒凉不毛的地区。
Light and radio waves are absorbed and scattered by interstellar gas and dust.
光波和无线电波能被星际气体和尘埃吸收及散射。
The space between the Milky Way’s stars is filled with gas and dust—lots of dust.
银河中天体之间的空隙满是毒气与尘埃-大量的尘埃。
He said: "I think the droughts [and dust storms] in Australia are a harbinger."
他说：“我认为发生在澳大利亚的干旱(和沙尘暴)是一个坏兆头。”
After five years, the grassland has been restored and dust storms have lessened.
五年后，草原开始恢复，沙尘暴已经减少了。
But the intensity of the color depends on the amount of ash and dust in the atmosphere.
但月亮颜色的深浅取决于空气中所含的灰烬和尘埃的数量。
Grass can be found only in narrow strips separated by long stretches of rock and dust.
草长在绵延的岩土间细窄的石缝里。
Comets lose ice and dust each time they come near the sun, leaving behind trails of debris.
彗星每次接近太阳时，都会将一部分冰和尘埃遗留在彗尾的遗迹中。
A small pilot project will help determine if solar panels can withstand high winds and dust.
一个小的试验项目正检验太阳能板是否能经受得住大风和灰尘。
The grayish structure surrounding the black hole, called a torus, is made up of gas and dust.
而图中环绕黑洞的灰色部分，被称为环体，它们由气体和星尘组成。
Current theory holds that planets are made from disks of gas and dust left over after star birth.
现有理论指出：行星是恒星诞生之后的残留物——碟状尘埃和气体的产物。
Astronomers will tell you that they are born in the collapse of primordial clouds of gas and dust.
天文学家们会告诉你，它们诞生于原始的由气体和尘埃组成的云团的崩溃。
There was sand and dust everywhere, and on most days the temperature came close to a hundred degrees.
到处都是沙子和尘土，绝大多数日子，气温都在三十六七度。
A classic dark nebula, the Snake is a tendril of interstellar gas and dust about 650 light years away.
在经典黑暗星云中，蛇是星际气体和尘埃组成的卷须，长约650光年。
Meteor showers occur when Earth orbits through clouds of particles and dust on its path around the sun.
流星雨是地球在绕太阳运行的轨道上穿过微粒和尘埃团时产生的。
The State encourages enterprises to adopt advanced technology for desulphurization and dust removal.
国家鼓励企业采用先进的脱硫、除尘技术。
As the black hole feeds, the gas and dust heat up and spray out X-rays, as illustrated by the white rays.
当黑洞吞噬物质时，气体和尘埃会被加热，并喷发出x射线，在图中以白色表示。
Some of IO's eruptions are violent enough to hurl giant plumes of gas and dust 500 kilometres into space.
伊奥的有些火山喷发激烈到甚至足以将大量气体和火山灰推到500公里开外的太空中。
It consists of a dusty, doughnut-shaped cloud of gas and dust that feeds a central supermassive black hole.
它由多尘的环状气体云和不断进入中心巨型黑洞的尘埃组成。
Earthlings can only wonder at the dense star clusters and massive gas and dust clouds that reside there.
地球生物只能对着那儿致密的星团和大质量气体尘埃望洋兴叹。
Earthlings can only wonder at the dense star clusters and massive gas and dust clouds that reside there.
地球生物只能对着那儿致密的星团和大质量气体尘埃望洋兴叹。
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