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- Global warming results primarily from human activities that release heat-trapping gases and particles into the air. The most important causes include the burning of fossil fuels such as coal, gas, and oil, and deforestation. 全球变暖主要是由人类活动引起的，人类活动会向空气中释放吸热气体和粒子。其中最重要的因素包括像煤、天然气和石油等化石燃料的使用和森林的砍伐。
- ratioof gas and particles velocity 气固速度比
- His long speech was nothing but gas and hot air. 他的长篇大论只是吹牛和空话。
- In addition to releasing gases and particles into the atmosphere, humans produce waste that is dumped on the environment. 人类除了向大气层释放废气和微粒，还向自然环境倾泄垃圾。
- Dad step on the gas and the car speed up to150 kph. 爸一踩油门，车速冲到每小时一百五十公里。
- She lit the gas and gave the coffee another warm. 她点燃煤气，把咖啡重新热了一下。
- She lit the gas and warmed it [the coffee] up again. 她点燃煤气，把它重新热了一下。
- Besides coal, the most important natural fuel are gas and oil. 除了煤，最重要的天然燃料是煤气和石油。
- The cylinder is getting too much gas and not enough air. 汽缸里汽油太多而空气不足。
- Protons and particles of different ranges can thus be separated. 这样,就能区分出不同射程的质子和粒子。
- Turn on the gas and light the oven. 转动煤气开关点燃烤箱.
- Mother lit the gas and began to cook the dinner. 妈妈点上煤气，开始做饭。
- She lit the gas and began to prepare supper . 她点上煤气，开始做晚饭。
- The air is gas and the diamond is a solid. 空气是气体而金钢石是固体。
- The driver step on the gas and accelerated the car. 司机加大油门,让汽车加速行驶。
- Do that include gas and electricity? 房租包括电和煤气吗？
- The house is fit up with gas and steam heater. 房子里装有煤气和暖气。
- He lit the gas and began to prepare supper. 他点上煤气，开始做晚饭。
- She lit the gas and began to prepare supper. 她点上煤气,开始做晚饭。
- The thermal relaxation time of small drops and particles in air is quite short. 空气中小水滴和粒子的热张弛时间是非常短的。
