氦是一种很轻的气体。
氢是很轻的气体。
This energy is contained in a very light gas called hydrogen.
它含在一种叫氢气的很轻的气体中。
The principle of two-stage light gas gun, its driver gas and test facilities are expounded.
阐述了其工作原理及所使用的工作气体和试验用品；
If you suspect a gas leak, do not strike a match or even turn on an electric light.
假如你怀疑有煤气泄漏，不要划火柴，甚至连电灯都不要开。
In both cases, high concentrations of the gas are dark, while low concentrations are light.
在两幅图中，气体密度越高的区域颜色也就越深，低密度区则更浅。
There is also some evidence that the gas was used for light.
也有证据说明这些气体也被用来照明。
Strict economy in coal, gas, and electric light.
严格节约煤、汽油和照明用电。
The gas jets on either side of the mirror flooded her with warm , crude light.
镜子两边的煤气灯，发出强烈的光芒，把她身上照得暖和和的。
It's dangerous to look for an escape of gas with a naked light.
用无罩灯去寻找漏煤气的地方很危险。
Electric light has superseded gas light.
电灯已经取代了煤气灯。
Put a match to the gas jet to light the gas.
把划燃的火柴放在煤气喷嘴上以点燃煤气。
The whole gas cloud is about 50 light-years across.
整个气体云的宽度约为50光年。
You put the kettle on the gas stove, and then light the gas.
你先把水壶放在瓦斯炉上，再点瓦斯。
Once she turned on her gas oven and forgot to light.
有一次她开了煤气灶，却忘了点火。
Put a match to the gas jet to light the gas.
把火柴放在煤气炉嘴上来点燃煤气。
Once she turned on her gas oven and forgot to light it .
有回她扭开煤气灶；却忘了点火。
It brought a new, safe light to the gas lit cities and candlelit countryside.
它给点煤气灯的城市和点蜡烛的乡村带来了一种安全的新光源。
Light hydrocarbon tank is one of the main fixtures of natural gas production.
前言轻烃储罐是天然气生产中的主要静装置之一。
A star is big, burning, ball of gas that emits light.
恒星是一个大而燃烧的球状的气体，会发光。
Somewhat differently, gas generators have been used to produce fuel gas from light oil.
与此稍有不同的是，气体发生炉曾用于用轻油制出燃料气。
Put a match to the jet to light the gas.
将火柴放在煤气喷嘴上点燃煤气。
Don't light your kitchen stove if you suspect a gas leak;
另外，如果怀疑煤气泄漏，千万不要去点燃煤气灶。
A modal analysis system for light truck exhaust gas pollutant has been developed.
研制了一种轻型汽车排气污染物模态分析系统。
Depending on the polymer used, this is done with gas, light, or heat.
依据使用的聚合物的不同，可以使用气体、光照或加热的手段达到固化目的。
Day light comes from the sun, which is a mass of hot, glowing gas.
日光来自太阳，太阳是一团炽热发光的气体。
Electric light has superseded gas light.
电灯逐步取代了煤气灯。
Electric light has superseded gas light.
电灯逐步取代了煤气灯。
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