恢复用英语怎么说back

"Back" is a verb and a preposition in English.
As a verb, "back" can mean to return to a previous place or position, or to support or endorse someone or something. For example:
I need to back to the store to buy milk. (return to a previous place)
Can you back me up on this idea? (support or endorse)
As a preposition, "back" can mean in the opposite direction from the front, or toward the rear of something. For example:
The cat was hiding under the bed, back against the wall. (in the opposite direction from the front)
She leaned back in her chair and closed her eyes. (toward the rear of something)
"Back" comes from the Old English word "bæc," which means "back" or "backward." The word has been in use in English for centuries and has undergone very little change over time.
Here are some additional examples of "back" used in sentences:
I'm going to back the car out of the driveway. (return to a previous position)
He always has my back, no matter what. (support or endorse)
She looked back over her shoulder to see if anyone was following her. (in the opposite direction from the front)
The dog wagged its tail and pressed its back against my leg. (toward the rear of something)