up to
01
深入参与, 非常忙碌
deeply involved
up to
01
直到, 高达
used to indicate a limit or boundary, typically in terms of physical distance or location
例子
The water reached up to his knees.
水到了他的膝盖。
02
最多, 高达
indicating that the quantity or count mentioned does not exceed a specified value
例子
She can do up to 20 push-ups.
她可以做多达20个俯卧撑。



























