No one knows for certain what happened, but it's a fair bet that it was not an accident.
没有人知道究竟发生了什么,但几乎可以肯定这并非意外。
This festival is a cheerful occasion, for on this day, the dead are said to return to their homes and they are welcomed by the living.
这个节日是个欢乐的日子,因为在这一天,据说死去的人要回到他们的家里来,活着的人则对他们表示欢迎。