- 双语例句
1、
Being both lighter than air and nonflammable, helium is used to inflate balloons and airships.
由于既比空气轻又不可燃, 氦用作充气球和飞艇.
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2、
Hydrogen is a useful gas for balloons. It is lighter than air.
氢气对于气球来说是一种有用的气体, 它比空气轻.
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3、
Balloons are aerostats, which means that are lighter than air when inflated.
气球是轻飞行器,也就是说,充气后, 它们会比空气轻.
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4、
Lighter than air, a song or so It'seems.
看似一首歌,或轻甚空气.
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5、
In nature, lighter - than - air volcanic lava traps bubbles of various sizes as the molten rock cools.
自然界中, 比空气还轻的各种火山灰在冷却过程中变为海底火山岩.
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6、
Hydrogen is much lighter than air.
氢比空气轻得多.
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7、
We tell the story of lighter - than - air balloons.
我们将播讲有关人类乘坐轻气球飞行的故事.
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