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.
スタントは非常に危険なので 多額の費用がかかる上 実際には行えないスタントシーンも多数あります スタントマンに大怪我をさせるわけにはいきません