If we give the adulttree proper care, it will go on to live healthily for many years.
如果我们给成年的树适当的照顾，它会健康地活许多年。
2
The adulttree gives us shade, oxygen and natural beauty.
大树为我们提供荫蔽、制造氧气，让我们享受大自然的美丽。
3
To achieve giant stature, a tree needs three things: the right place to establish its seedling, good growing conditions and lots of time with low adult mortality.