煤烟

But they say the good news is that cleaner diesel engines and other technologies are being developed to reduce soot.

但是，好的一面就是更清洁的柴油发动机和技术的发展可以减少煤烟的产生。

The study says the problem is how soot interacts with snow and ice.

研究指出存在的问题是：煤烟是如何与冰雪相互作用的。

But do you know that all people who burn candles use soot free natural candle?

但你可知道，所有的人煤烟免费使用天然蜡烛燃烧的蜡烛？

Meantime, soot and dust from this week's wildfires is making the air quality especially bad there.

同时，这周的火灾所带来的煤烟和灰尘使那里的空气质量非常之差。

Soot is the product of the imperfect combustion of fuel.

煤烟是燃料不完全燃烧的产物。

And that's not to mention the hopes of U.S. diesel fans that just went up in a sooty puff of smoke.

这还没有提到希望美国柴油的球迷，仅仅上升了煤烟吞吐的烟雾。

His sooty hand smudge d the paper.

他被煤烟熏污的手把纸弄脏了。

Scientists with the American space agency , NASA , suggest it as a major cause of global warming.

美国航天局和宇航局的科学家指出煤烟是全球变暖的一个主要因素。

Tom Thumb went up the kitchen chimney and looked out at the top—there was no soot.

汤姆大拇上了厨房的烟囱，从顶上看——没有煤烟。

Result, former the gray kind that go to bed gets protective on lichen, be in at this moment black is truncal on easy however by avian prey; And black type criterion because of fuliginous covering spare avian prey to get live and developing instead.

结果，原先歇息在地衣上得到保护的灰色类型，这时在黑色树干上却易被鸟类捕食；而黑色类型则因煤烟的掩护免遭鸟类捕食反而得到生存和发展。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。