Set appropriate limits on phone use and provide a timer to help the child obey this rule.

对电话的使用有适当的限制，利用计时器帮助孩子遵守规定。

youdao

The timer is also reset at this point, so the new multiplying factor is set to be doubled after five seconds, and so on.

计时器这时也重置，所以新的乘数也在 5 秒之后被设置成加倍数值，如此类推。

youdao

Set a timer (use a kitchen timer, or use a countdown timer on your computer), and plug away at your work.

设定一个计时器(用厨房的计时器或是电脑上的倒数计时器)，然后专心做事。

youdao

Set the programmable timer on the machine and it will be ready just in time for dinner.

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