网友回答：
they knock at someone’s door and say: “trick or tread”. it means if you don’t give me the candies， at last kids can get enough candies for one year.
温馨提醒：随时光变迁，文中所陈述观点；准确性、难免有所变动，因此文中观点仅供参考。
they knock at someone’s door and say: “trick or tread”. it means if you don’t give me the candies， at last kids can get enough candies for one year.
