give off a gas的意思|示意

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。

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。

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。

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。

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。

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。