I jumped back and fell on my ass.

我往后一跳，摔了个屁股墩。

《柯林斯英汉双解大词典》

Fortunately, I jumped back in time.

幸运的是，我及时跳回来了。

youdao

Luckily I jumped back in time.

幸运的是，我及时的跳了回来。

youdao

In order to follow her, I jumped back into my car and began to search the drives of Central Park.

NEWYORKER: The Daughters of the Moon

As I jumped into the back seat of a car, both women looked at me with unconcealed alarm.

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But I never imagined moving back, and I remained the kind of jumped-up cosmopolitan who liked to mock the idea of Mayberry.

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