Translation of "to time" into Chinese

Interview one or two publishers who serve as auxiliary pioneers from time to time.

访问一两位不时参与辅助先驱工作的传道员。 宣布外勤服务的安排。

How long do you want to time it?

你 要 定时 多长 ?

And that's one way that we try to time technology trends.

这就是我们为技术趋势计时的一种办法。