To precede in time; antedate.

先于时间上先于…；

youdao

If you want to leave a certain amount of time from now, precede the time argument with a +. So, to be reminded to leave in two hours, type the following.

如果您希望在从现在开始的某个时间后离开，可以在时间参数前面加上+。

youdao

If you want to leave a certain amount of time from now, precede the time argument with a +. So, to be reminded to leave in two hours, type the following.

如果您希望在从现在开始的某个时间后离开，可以在时间参数前面加上+。

youdao