原有树木 meaning in English

existing tree

Positioning of building blocks also minimizes disturbance to mature trees
建筑物的位置亦尽量避免砍伐原有树木。
The overall design principle is to aim for a green campus to allow the trees to grow and the foliage to provide cooling shades in summer
兴建新书院和宿舍的建筑概念都是以尽量绿化为大前题，尽量保留原有树木，更利用自然林木作降温之用。
The weather has changed , in many places drastically , because people have cut down too many trees , and they cannot grow fast enough to replace them . the weather has changed , and the rains are being all washed away instead of being preserved in the earth . the trees attract rain and also keep the water ; it flows slowly down , and it preserves the mountains
很多地方的气候已经严重改变，都是因为人们砍掉太多树木的缘故，新栽种的树木又没办法长那么快来取代原有树木，所以气候因此变改，而且雨水都流失掉，没办法保留在土壤中，因为树木除了可以引来雨水，又能保存住这些雨水，让雨水慢慢地往山下流，这样一来，山才能被保留下来，也才能保存溪流和河川。