科技树的英文：
technology tree
n. 技术，科技；技术应用
This is the centre of the technology.
这是这项技术的核心。
Technology Department is responsible for the overall planning of technology.
技术部负责按体系要求做好技术的总体策划工作。
HTTC HyperTransport Technology Consortium
HyperTransport技术协会
DHT Dolby Headphone Technology
杜比耳机技术
technology for producing icecream with soybean
用大豆生产冰淇淋技术
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
Such a tree may be at odds with a scientific tree.
这种树，可能与科学上的树有区别。
Deciduous trees: Hardwood trees which shed their leaves.
落苣树:年落苣的硬木树。