What is the translation of " WHEN TO CALL " in Chinese?

• 时候打电话
• 何时需要
• 何时打电话给

Examples of using When to call in English and their translations into Chinese

Know when to call.
知道什么时候打电话。

It can call and it can decide when to call.
只知道它可以调用，并决定何时调用。

When to call 101?
什么时候拨打101？?

He knows when to call.
知道什么时候打电话。

When to Call an Ambulance?
何时该叫救护车?

You know when to call.
知道什么时候打电话。

When to Call the Experts?
什么时候打电话给专家?

They know when to call me.”.
他们知道，何时邀请我。

When To Call Professionals?
何时致电专业人士?

But do you know when to call 911?
知道何时拨打999/911?

When To Call Professionals?
何时打电话给专业人士?

Fetal Hiccups- When To Call The Doctor?
宫颈癌-什么时候打电话给医生?

When to call in the experts?
什么时候打电话给专家?

Cervical cancer- when to call a doctor.
宫颈癌-什么时候打电话给医生.

When To Call Professionals?
什么时候打电话给专业人士?

That was how I knew exactly where he was and exactly when to call.
这就是赢如何确切地知道他在哪里，确切地说什么时候打电话。

When to Call a Professional?
什么时候打电话给专业人士?

Invent a code word or a sign so, family, friends and co-workers know when to call for help.
发明一个密码或符号，家庭，朋友和同事知道何时需要帮助。

When to call in a professional?
什么时候打电话给专业人士?

Establish a code word or sign so that family, friends, teachers and co-workers know when to call for help.
发明一个密码或符号，家庭，朋友和同事知道何时需要帮助。

Know when to call for an ambulance.
告诉你何时该叫救护车.

Real Strategy- Choose what missions to fight, what troops to use, and when to call in reinforcements.
真实的战术――选择进行什么战役、调动什么军队、何时呼叫增援。

When to Call in the Professionals?
什么时候打电话给专业人士?

If you suspect your baby has hives, learn how to spot the symptoms, how to treat her, and when to call a doctor.
如果您怀疑您的宝宝有荨麻疹，请了解如何发现症状，如何治疗她，以及何时打电话给医生。

You know when to call your aging parent.
你知道什么时候打电话给你年迈的父母。

When to call the doctor if you have haemorrhoids?
当打电话给医生，如果有肿胀的淋巴结?

How and when to call emergency services.
何时及如何致电紧急服务.

Ive says that knowing when to call a halt to a project is"an important part of my job".
乔纳森还说，知道何时叫停一个项目是“我的一项重要职责”。