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
Елизавета Городищева (Редактор отдела «Экономика»)
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Pull-through transforms
It flew with two astronauts instead of four, leaving two seats spare for Butch and Suni's return.
"There are lots of different entrances but it seems everyone with a standing ticket is directed to the same one rather than spreading the crowds out," Adam said.