all at once; at one time; in one go
Describes doing something in a single action or simultaneously, rather than in separate steps.
Please don't try to do too many things at once.
彼は一度に二つの仕事を引き受けた。
He took on two jobs at the same time.
I was troubled when I was asked to do three jobs all at once.
I got the shopping and my errands done all at once.
It's hard to carry a lot of luggage all at once.