| 1. | Nearly all the precipitation that falls on the earth results from the cooling of rising air .
几乎落到地球上的所有降水都是由于上升空气的冷却。 |
| 2. | Fantastic flights have also been made with gliders, but these use nature's rising air currents rather than human power .
飞行的幻想当然还可以靠滑翔机来满足，不过滑翔机用天然的上升气流，而不用人的体力。 |
| 3. | The equatorial belt of calms, with its rapid evaporation and strong rising air currents, provides an ideal situation for abundant rain .
在赤道无风带，迅速的蒸发和强烈的上升气流，为大量降雨提供了理想的环境。 |
| 4. | Low - level cyclones usually imply horizontally confluent flow and vertically rising air resulting in inclement weather . low - level anti - cyclones bring in fine and stable weather due to horizontally diffluent flow and vertically sinking air
低空气旋表徵水平汇聚、垂直上升的不稳定气流，可以导致恶劣天气产生；低空反气旋则代表水平辐散、垂直下沉的稳定流场，伴随著晴朗的天气。 |
| 5. | They form when a layer of relatively stable and moist air - stream is forced to rise by hills , causing up and down wave motions in the air . the rising air in the wave causes the moisture to cool down and condense into water droplets , which then become visible to the eye
它的成因是当一层较为稳定及潮湿的空气遇到山脉而被迫抬升，引起上下起伏的波浪，而在波浪中上升的气流令潮湿的空气变冷，凝结成水点，使我们可以用肉眼看见。 |
| 6. | Whether it is the bats who live in high - rise air conditioning ducts or the spectacular chinese white dolphin playing in front of chek lap kok airport , unless we know what is out there to protect however can we start or want to protect our natural environment
不论是栖居在高楼大厦的空调排气道的蝙蝠，还是在赤角机场对开海面嬉戏的中华白海豚，只有增加对不同野生生物的了解，我们才知道甚么物种需要加以保护，继而懂得爱护我们的自然环境。 |
| 7. | For instance , hot weather and rising air can help dispersion of air pollutants ; rainfall can wash out certain pollutants in the air ; an occasional phenomenon known as temperature inversion can trap air pollutants in the lower atmosphere ; and still wind conditions can inhibit effective dispersion of air pollutants . moreover , when a weak northerly wind prevails in southern china , the impact of regional air pollution on hong kong will become more serious
例如，炎热天气和上升的空气有助空气污染物消散；降雨可冲走空气中部份的污染物；偶尔出现的逆温层现象能把空气污染物困在大气的低层；风静的情况可引致空气污染物不能有效消散；及当华南地区吹微弱北风时，整个香港受区域性空气污染问题影响也会特别严重。 |
