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.

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.

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.

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很多事情已经完成,已经取得了很大的进步在近年来我们城市的绿色化。许多树被种植和护理被种植的树木。但是,尽管如此,绿色化城市在中国远非令人满意与世界上其他国家的城市。例如,绿色空间对于每一个人在上海只有2平方米,而在伦敦的人超过20平方米。

我们可以从我们的城市的绿色化。首先,树木吸收二氧化碳是有害的,但产生的氧气对人类至关重要。其次,到处都是树,我们的城市将会更美丽。第三,树木可以改善城市的气候,使其冬天夏天既不太热也不太冷。

因为我们可以受益于使我们的城市更环保,我们应该不遗余力地这样做。我们应该种植更多的树木和采取更好的照顾他们当他们正在增长。此外,我们不应该砍伐树木。总之,我们应该尽一切努力增加我们城市的绿色化。