1. One day two of his leopards escaped from their cage, but Hunter fearlessly went up to them and led them safely back again.
    一天，两只豹子从笼子里逃了出来，亨特毫不畏惧地走近它们，并平安无事地把它们领回。

2. Who put his questions to nature instead of to the ancients, and who drew his conclusions fearlessly.
    他向自然界而不是向古人提出问题，并大胆地得出结论。