A crouch is a position in which your legs are bent under you so that you are close to the ground and leaning forward slightly.
They walked in a crouch, each bent over close to the ground.
他们蹲伏着行走,一个个弯着腰快要贴着地面了。
crouch down
Crouch down means the same as crouch.
He crouched down and reached under the mattress.
他蹲下来,把手伸到了床垫下面。
crouches , crouching , crouched
If you are crouching, your legs are bent under you so that you are close to the ground and leaning forward slightly.
squat
We were crouching in the bushes.
我们那时正蹲伏在灌木丛中。
I crouched on the ground.
我蹲伏在地上。