重点讲解：
1. hand down
把…传下去；传给（后代）；
eg. Many old legends were handed down from generation by mouth.
许多古老的传说都是一代一代口传下来了。
eg. We should hand the story down from generation to generation.
我们要把这个故事一代代传下去。
2. as if
好像；仿佛；
eg. The house seemed muted, hushed as if it had been deserted.
房子里似乎悄然无声，安静得好像已经没人在住一样。
eg. It's as if I'm living in a hazy dream world.
我好像生活在缥缈的梦境里。
3. be filled with
充满；
eg. He was filled with horror at the bad news.
听到这个坏消息，他心里充满恐怖。
eg. The forest was filled with the sound of running water.
森林中处处都能听到流水声。