downbend

例句：

1. 1. The riveris downbending towards the sea.
   河流正在向大海弯曲。
2. 2. She bent down to pick up the fallen leaves.
   她弯下腰去捡落叶。
3. 3.He bent over to tie his shoelaces.
   他弯下腰来系鞋带。