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英语翻译Itisthattimeoftheyearwhenallofuslooktothesky,waitingforthefirstdropsofraintofallonourfaces.ButforpeoplewholiveinpollutedcitieslikeDelhiorTokyo,there’ssomebadnews.Israeliscientistshavediscovered
题目详情
英语翻译
It is that time of the year when all of us look to the sky,waiting for the first drops of rain to fall on our faces.But for people who live in polluted cities like Delhi or Tokyo,there’s some bad news.Israeli scientists have discovered that air pollution may stop rain from falling.
The sun beats down on the earth and heats up the land and water.When the land and water have taken in as much heat as they can,they heat up the air .the air warms up and rises.It has water vapour.As the air rises,it becomes cooler.The water vapour hits particles of dust that always present in the air .It changes into a thick form.It forms drops.
When these drops become too big and heavy,they fall back to the earth as rain.
Now,the smoke from cars,buses and factories adds to the particles in the air.Because there are so many of these particles,many small drops form,but they are not big enough to fall down as rain.These clouds are called dry clouds.The Israeli scientists took many pictures of these dry clouds caused by air pollution.They showed water drops half the size of those present in clean clouds.
The only way to get back good rains is by cleaning up the environment .Or ,a time may come when clouds will from but no rain will fall.
It is that time of the year when all of us look to the sky,waiting for the first drops of rain to fall on our faces.But for people who live in polluted cities like Delhi or Tokyo,there’s some bad news.Israeli scientists have discovered that air pollution may stop rain from falling.
The sun beats down on the earth and heats up the land and water.When the land and water have taken in as much heat as they can,they heat up the air .the air warms up and rises.It has water vapour.As the air rises,it becomes cooler.The water vapour hits particles of dust that always present in the air .It changes into a thick form.It forms drops.
When these drops become too big and heavy,they fall back to the earth as rain.
Now,the smoke from cars,buses and factories adds to the particles in the air.Because there are so many of these particles,many small drops form,but they are not big enough to fall down as rain.These clouds are called dry clouds.The Israeli scientists took many pictures of these dry clouds caused by air pollution.They showed water drops half the size of those present in clean clouds.
The only way to get back good rains is by cleaning up the environment .Or ,a time may come when clouds will from but no rain will fall.
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答案和解析
一年里的这个时候是我们仰望天空,等待着第一滴雨水滴落在我们的脸颊上的时间.但是住在受污染城市如德里或东京的人却得到了坏消息.以色列的科学家发现了空气污染可能会制止下雨.
太阳照射在地球上并把陆地和水加热.但陆地和水所能承受的热度达到极限时,就会把空气加热.空气变热并上升,这就是水蒸气.空气上升的同时逐渐变冷.水蒸气撞击空气中一直存在的尘埃粒子.它转换成厚形式并形成滴状物.
当这些滴状物过大与重时,就会形成雨滴掉落回地面.
如今,从车,巴士以及工厂的烟雾加入了空气中的粒子.由于有众多的粒子,许多粒子都成为了滴状物,但是却不够重以形成雨掉落至地面.
这些云被称为干云.以色列科学家拍下了许多张有空气污染而形成的干云的照片.他们显示了干云里的滴状物只有清洁云(未受污染的云)里滴状物的一半大小.
唯一恢复正常下雨的方法是清洁环境.否则,许多云形成却没下雨的那天将到来.
太阳照射在地球上并把陆地和水加热.但陆地和水所能承受的热度达到极限时,就会把空气加热.空气变热并上升,这就是水蒸气.空气上升的同时逐渐变冷.水蒸气撞击空气中一直存在的尘埃粒子.它转换成厚形式并形成滴状物.
当这些滴状物过大与重时,就会形成雨滴掉落回地面.
如今,从车,巴士以及工厂的烟雾加入了空气中的粒子.由于有众多的粒子,许多粒子都成为了滴状物,但是却不够重以形成雨掉落至地面.
这些云被称为干云.以色列科学家拍下了许多张有空气污染而形成的干云的照片.他们显示了干云里的滴状物只有清洁云(未受污染的云)里滴状物的一半大小.
唯一恢复正常下雨的方法是清洁环境.否则,许多云形成却没下雨的那天将到来.
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