落叶的英文：
defoliate
defoliation
shatter

参考例句：

Deciduous broad-leaf forest
落叶阔叶林

The drains are bunged up with dead leaves.
落叶把下水道堵住了.

The drain was stopped up with fallen leaves.
阴沟被落叶堵塞了。

a meteor shower;a shower of leaves.
流星雨;一阵落叶

Leaves stopped up the drain.
落叶把排水沟都填满了。

Father is raking fallen leaves in the garden.
父亲在庭院里耙落叶。

The falling leaf was buoyed up by a rising air current.
那片落叶被一股上升的气流浮起。

The laws littered with leaves.
草坪上零乱地散布着落叶。

Defoliant： Chemical dust or spray applied to plants to cause their leaves to drop off prematurely.
落叶剂:落叶剂是一种化学粉剂或喷洒剂，施于植物以使树叶提早掉落。

Make a bonfire of fallen leaves
焚烧落叶

defoliate是什么意思：
vt.
vi. (使)落叶

Defoliant： Chemical dust or spray applied to plants to cause their leaves to drop off prematurely.
落叶剂:落叶剂是一种化学粉剂或喷洒剂，施于植物以使树叶提早掉落。

Gradual defoliation (lower leaves yellow and fall) ... Overwatering (root damage), underwatering (not enough water to support full foliage), lack of sufficient light, or lack of fertilizer.
逐渐落叶（下端叶子变黄脱落）...浇水过多（伤根），浇水不足（没有足够的水供所有的叶子），缺光，缺肥。

defoliation是什么意思：
n. 落叶

Defoliant： Chemical dust or spray applied to plants to cause their leaves to drop off prematurely.
落叶剂:落叶剂是一种化学粉剂或喷洒剂，施于植物以使树叶提早掉落。

Gradual defoliation (lower leaves yellow and fall) ... Overwatering (root damage), underwatering (not enough water to support full foliage), lack of sufficient light, or lack of fertilizer.
逐渐落叶（下端叶子变黄脱落）...浇水过多（伤根），浇水不足（没有足够的水供所有的叶子），缺光，缺肥。

shatter是什么意思：
v. 粉碎；毁坏；给予极大打击；破裂

Celia was shattered by the experience.
这一经历使西莉亚受到很大刺激。

Your news shattered me.
你送来的消息使我痛不欲生。

The vase shattered into a thousand pieces.
花瓶已经粉碎了。