从后向前扫描已排序部分，找到插入位置，元素后移腾出空间
显而易见，现在L3的故事并不性感，所以小鹏才急切地用L4来叙事。
。51吃瓜对此有专业解读
await dropOld.writer.write(chunk3); // ok, chunk1 discarded
ssh [email protected] -p 8022
And footage showed orange balls of light flying across the sky over the Haitian capital of Port-Au-Prince, leaving a trail of smoke behind.