Many things have been done and great progress has been made in the greenization of our cities in recent years. Many trees have been planted and much care has been taken of the planted trees. But, in spite of all this, greenization in the cities in China is far from satisfactory compared with cities in other countries in the world. For example, the green space for every people in Shanghai is only 2 square meters while that of the people in London exceeds 20 square meters.
近年来，我们在城市绿化方面做了很多事情，取得了很大进展。许多树已被栽种，并已对栽种的树采取了许多措施。但是，尽管如此，中国城市的绿色化与世界其他国家的城市相比还远远不能令人满意。例如，上海的人均绿地面积只有2平方米，而伦敦的人均绿地面积超过20平方米，
We can benefit much from the greenization of our cities. First, trees absorb carbon dioxide which is harmful, but produce oxygen which is essential to human beings. Secondly, with trees all around, our cities will look more beautiful. Thirdly, trees can improve the climate of the cities, making it neither too hot in summer nor too cold in winter.
的人可以从城市的绿色化中受益匪浅。首先，树木吸收二氧化碳，这是有害的，但产生氧气，这是人类必不可少的。第二，周围都是树，我们的城市会更漂亮。第三，树木可以改善城市的气候，使之在夏天不太热，冬天也不太冷。
Since we can get so much benefit from making our cities greener, we should spare no effort to do so. We should plant even more trees and take even better care of them while they are growing. Besides, we should not cut down trees any more. In a word, we should do everything to add to the greenization of our cities.
因为我们可以从城市绿化中得到很多好处，所以我们应该不遗余力地这样做。我们应该种更多的树，在它们生长的时候更好地照顾它们。此外，我们不应该再砍树了。总之，我们应该尽一切努力为城市的绿色化添砖加瓦。