call for an ambulance

基本解释

You ought to send the patient to the hospital or call for an ambulance.
你应该把病人送往医院或叫救护车来。
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If not you maybe dead, so stop reading now and call for an ambulance and/or an undertaker.
如果没有你也许死了，你们也不要读了现在，并要求救护车和/或承办。
If your child shows signs of a severe allergic reaction, such as swelling of the upper body or face that causes the throat to swell, restricting breathing, call for an ambulance immediately.
若你的孩子出现过敏反应，诸如上身或脸部肿胀引起的口腔肿胀，呼吸困难，马上打电话叫救护车来。

So when do you just tough it out, and when do you head for the emergency room, or call an ambulance?
MSN: When to go to the ER with the flu