translation.en: Because stunts are obviously very dangerous, they're very expensive, and there are a lot of stunt scenes that you cannot do, obviously, because you can't really allow the stuntman to be seriously hurt.
translation.zh: 因为替身工作非常危险，雇替身的花费也很大。 很多使用替身的片断还不能用真人， 因为这些特技太危险了，真人会受伤。