林木育种学的英文：
forest tree improvement, forest tree breeding
n. 森林；一丛
They censused the bear in the forest.
他们统计调查森林中熊的数量。
There is a small shed in the midst of the forest.
这座森林的中间有一间小棚屋。
The wanted man hid in the forest.
那受通缉的男子躲进了森林里.
n. 树，木料，树状物
v. 赶上树；爬上树；逃上树
The trees are sparse.
树木稀疏。
The trees are in blossom .
树上鲜花盛开。
the parent tree
母树
n. 改进，改善；增进
There is still room for improvement.
还有改进的余地。
Technical advances improve productivity.
技术进步提高生产力。
Her service has improved.
她的发球有了提高。