We chased it unflaggingly for a full hour, and I'd begun to think it would prove too difficult to capture, when the animal got the untimely idea of taking revenge on us, a notion it would soon have cause to regret.

在一钟头内，不停地追赶它，在想，捕捉它：恐怕是很不容易了，东西忽然起了不良的报复念头。