烧煤的工厂排出的大量黑烟还在污染空气.(pollute)
Factories that burn coal still with a lot of black smoke.
A good neighbour is than a brother far away.(good)
Greenhouse gases are to the environment. (harm)
There're many rocks in unusual shapes﹣ some hang down, and others upwards. (指向)
Tan Dun's music Water, which is full of the sounds of nature, is listening to.(值得)
The temperature in our hometown usually drops zero in winter. (在……以下)