Sometimes we would also try to hit the hubcaps of passing cars and , when we succeeded , it made a loud pinging noise .
有时我们还砸过往车辆的毂盖，每当击中了就会响亮地发出砰的一声。
It takes a lot of pinging back and forth in a thicket of carbon atoms to find an exit . This action is what gives diamonds their dazzling sparkle .
光子要在错综复杂的碳原子间反复冲撞才能找到出路。而这就是钻石闪耀着令人眩目的光辉的原因。
Offering over-the-shoulder advice after the more formal you-should-pay-me route communicates that there \'s a difference between pinging you occasionally with questions and taxing you regularly with real or meaningful work that you should be compensated for .
