He willed himself not to panic.

他竭力让自己不要恐慌。

《牛津词典》

Organizers appealed to the crowd not to panic.

组织者呼吁人群不要惊慌。

《牛津词典》

The important part is not to panic.

重要的部分是不能惊慌。

youdao

You know,the circulation, and the smell of your own panic, you know, when you're not sure what to do."

VOA: special.2010.07.26

Its co-designer,Karl Alperovich, told VOA that Francis Gary Powers survived because he did not panic as his plane plummeted to the ground.

VOA: standard.2010.05.07

"It was pretty much of a shock when I got here." "I mean,if you're going to talk to some of your friends of some of the stuff you saw and you can't describe the smells, the feeling of the heat on your body and the sweat running down your back, the smell of the pus that hits your nose of unwashed bodies in a closed room, the circulation, the smell of your own panic when you're not sure what to do" Other doctors in the film echo Dr.Krueger's sentiments.

VOA: standard.2010.06.29

"We appeal to our people to remain calm and not to panic, " he said.

BBC: Mosque in Soweto

Severn Trent Water urged people not to panic and to do all they could to conserve water.

BBC: NEWS | UK | Water runs out in flood-hit areas

I'm going to side with that logical part of your brain and advise you not to panic.

CNN: How do I retrieve a lost file?