苦楝树的英文：
bead tree

bead是什么意思：
n. 珠子；水珠
v. （使）成珠状；用珠装饰

The girl was clothed in ritual beads.
那姑娘挂着礼拜念珠。

I have a string of beads.
我有一串珠子。

I have a multicoloured bead necklace.
我有一串彩珠项链。

There were beads of blood on the floor.
地上有血滴。

Sweat beaded on his forehead.
他的头上冒出汗珠。

tree是什么意思：
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。