1. A flash of lightning hit the tree.
    雷电打在树上。

2. Anyone tiring of American or fake European culture can reach the Louvre art museum by express railway in less than an hour — from Minnie Mouse to Mona Lisa in a flash.
    任何人厌倦了那里的美式或仿冒的欧式文化了，就可乘快速列车，不到一小时就可到达罗浮宫，一瞬间就从米尼老鼠身边来到了蒙娜·丽莎面前。

3. You think about a problem until you're tired, forget it, maybe sleep on it, and then flash!
    你对某一个问题思考了很久，直至感到疲劳、把它忘掉了，也许暂时不去想它了，可后来却忽然来了灵感！