In addition to the visible releases, volcanoes like Mount Merapi also give off sulfur dioxide, a gas that can have a variety of effects on people and the environment.
除了这些可见的物质外，类似默皮拉的火山同时会释放出二氧化硫，一种能对人类和环境产生多种影响的气体。
Active galaxies give off bright radiation from their cores, where gas heats up as it is compressed into a swirling accretion disk encircling the black hole.
活动星系从它们的核部发出明亮的光芒，在那里，气体被加热并压缩成一个漩涡状的圆盘，漩涡的中心便是黑洞。
Plug-in electric hybrids give off less exhaust than gas guzzlers. And when they're running on battery power, they generate no fumes at all.
插电式混合动力汽车比单纯汽油动力汽车的废气排放量更少，尤其是当他们使用电源运行时，完全不会产生废气。
Apples give off a natural gas called ethylene that can wilt, spot, or rot other food.
苹果散发出的天然气体被称为乙烯，这可以使其他的食物枯萎，出现黑斑或腐烂。
L Glowing nebulae are named because they give off a dim, red light, as the hydrogen gas in them is heated by radiation from nearby stars.
l有一种星云叫亮星云，它们发出暗淡的红光，这种红光是因为构成星云的氢气受到附近星体的射线激发而发出的光线。
In Shanghai, some of the public buses begin to run on natural gas, which does not give off as much carbon dioxide as the petrol.
在上海，一些公共汽车开始使用自然气，这样就不会像石油那样排放那么多二氧化碳了。
Now many people have air-conditioners and cars, they produce (give off) waste gas.
现在许多人有空调和汽车，他们生产废气(释放)。
If (it is) burnt, rubber can give off a poisonous gas.
橡胶如果燃烧起来，会发出有毒气体。
The noises that produce by cars are unbearable, the exhaust gas that cars give off are bad for people's health.
车子发出的噪音难以忍受，排出的尾气也对人的身体有害。
It's true that trees take in the carbon dioxide and other toxic gas and give off oxygen which living beings lives on it.
树木能够吸收二氧化碳和其他有毒气体，并转化成生物们赖以生存的氧气。
Coral grubbs give off a gas that is lighter than air. This keeps the isles suspended in the sky, but can be a nuisance when attempting to construct buildings.
珊瑚虫会放出一种比空气还轻的气体，这种气体使诸岛悬浮于空中，但对于兴建楼房屋宇却又是阻碍不少。
Plug-in electric hybrids give off less exhaust than gas guzzlers. And when they're running on battery power, they generate no fumes at all. But there's a catch.
插电式混合动力电动车排放的废气要比油耗大的车少，而且在使用电池能时不会产生任何浓烟。
Researchers discovered that plants infected with a virus give off a gas that activates disease resistance in neighboring plants.
研究人员发现，感染病毒的植物能够发出一种气体；这种气体能在临近植物中激发疾病抗体。
Researchers discovered that plants infected with a virus give off a gas that activates disease resistance in neighboring plants.
研究人员发现，感染病毒的植物能够发出一种气体；这种气体能在临近植物中激发疾病抗体。
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