秒杀自用的可以参考一下案例

https://baijiahao.baidu.com/s?id=1782638525228725003&wfr=spider&for=pc&searchword=%E7%A7%92%E6%9D%80%20%E9%BB%84%E7%89%9B%20%E6%89%93%E5%AE%98%E5%8F%B8
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