fell的过去式和过去分词
ell的过去式和过去分词是felled，意为砍伐(树木);击倒，打倒(某人)。
例句The woodcutter felled the tree. 樵夫砍倒了那棵树。
The Method for Determining Felled Timber Volume in the Forestry Cases
林业案件中伐倒木材积测定方法
We are going to scale down the number of trees being felled.
我们要减少砍伐的树的数量。
A secondary forest is a natural forest formed after the original forest was felled.
But other students often felled him at the fence class for fun.
但其他学生常常在击剑课上把他砍倒来取乐。
He felled the tree with one stroke of the axe.
用斩刀砍掉头颅而死。他一斧头就将树砍倒。
Most of natural stands were felled in history, some gene resources had been lost.
历史上天然林遭受过强度破坏，有的遗传资源已经丢失。