This is the time that we must evince calm and wise restraint. Emotions must not run wild.

此时此刻，我们一定要保持冷静与睿智，不要放纵情感。

youdao

She regarded Cheryl as she would a wild animal, one that could be calm and playful one moment, savage and destructive the next.

她把Cheryl和一头野生动物一样看待- - -可能一会儿平静、好玩，一会儿野蛮、破坏。

youdao

I love the sea: I love the calm sea, and I love the surging sea even more, but never before had I ever seen the sea like this, so valiant, so unrestrained, so wild.

我爱海，我爱平静的海，更爱奔腾的海，但我从来没有象这回这样，看到这样豪迈、这-样奔放、这样疯狂的大海。

youdao

All was calm and serene when suddenly the car tried to kill me, sending itself into a wild 180-degree spin, which miraculously hit nothing.

FORBES: Cyprus -- The Nightmare Scenario