您要查找的是不是：
- Lighter than air, a song or so it seems. 看似一首歌,或轻甚空气。
- Lighter than air,a song or so it seems. 看似一首歌，或轻甚空气。
- Hydrogen is much lighter than air. 氢比空气轻得多。
- 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，它比空气轻多了。
- An airship depends on a gas that is lighter than air. 而飞艇依靠的是一种比空气轻的气体。
- When you send it flying up there, all at once you're lighter than air. 当你的风筝翱翔在天空,你立刻觉得自己比空气更轻。
- 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。
- Helium is also lighter than air,but it costs a lot of money. So balloons were (and are) usually filled with hydrogen. 氦也是一种比空气轻的气体，但是它太昂贵，因此气球通常都是装满氢气的。
- Helium is also lighter than air, but it costs a lot of money. So balloons were (and are) usually filled with hydrogen. 氦也是一种比空气轻的气体，但是它太昂贵，因此气球通常都是装满氢气的。
- Carbon monoxide (CO) is a colorless, odorless, poisonous gas, slightly lighter than air, that is produced by the incomplete burning of carbon in fuels. The main sources are internal combustion engines, mostly in motor vehicles. 一氧化碳（co）是一种无色无味的有毒气体，比空气稍轻，这是由燃料中的炭不能完全燃烧生成的，主要来源是内燃机，大多产生于机动车辆。
- An unmanned free balloon shall refer to a freely drifting inflatable object which is driven with no power, is piloted by nobody, is lighter than air, and whose gross mass is more than 4 kilograms. 无人驾驶自由气球，是指无动力驱动、无人操纵、轻于空气、总质量大于4千克自由漂移的充气物体。
- Lighter than Air Submarine Simulator 轻于空气的潜艇模拟器
- Scarlet is much lighter than crimson. 绯红色比深红色亮丽得多。
- He's lost a lot of weight: he's three kilos lighter than he used to be. 他体重减了很多，比以前轻了三公斤。
- Rail travel is cheaper than air travel. 乘火车旅行要比乘飞机便宜。
- My room is lighter than the one next door. 我的屋子比隔壁的屋子亮。
- Is sea travel more pleasant than air travel? 海上旅行要比空中旅行愉快吗?
- My room was lighter than the one next door. 我的房间比隔壁那间亮一些。
- What beam is lighter than all the other beams? 什么梁最轻?
- This room is lighter than that one. 这间房比那间房亮。
