西方人为什么喜欢敲木头？

Many Western people knock on wood. 很多西方人，爱敲一敲木头。 They do it right after saying something lucky. 一般刚说完好运的事，就来一下。 They believe it keeps bad luck away. 他们觉得这样，坏运气就不敢来。 Long ago, people thought trees had spirits. 古时候的人，觉得树里住着小精灵。 Knocking woke the spirits up, they thought. 敲一敲，就像叫醒树里的精灵。 Later, it was linked to a wooden cross. 后来它又和木十字架，扯上了关系。 Today people just do it for fun and luck. 现在嘛，大家图个吉利，敲着玩。