勤动脑、保持冷静会使游泳敏捷。

Swim smart, use your head, and keep your head still.

youdao

书中还有许许多多地故事，《商人跟魔鬼》地故事让俺明白了遇到困难要勤动脑筋，勇于克服可以。

There are many stories of the book, "Merchants and the devil" story so I understand the difficulties should wash their brains, the courage to overcome.

youdao

学习知识贵实践，勤思好问敢幻想，动脑动手细观察，发明创造显奇迹。

Your practice learning knowledge, diligent, good dare ask fantasy, brain began to observe, miracle invention.

youdao