We don't have time to waste just standing there in front of a new door: let's run up to it and go through it! Let's kick it open! Come on! You can do it!
翻訳についてのコメント
More literally: We don't have the free time to be slowly wandering around in front of a new door: let's get a running start and jump/fly out of it! Let's kick open that door: even you can certainly do it! ^_^