The dog advanced, retreated, paused an instant, and scoured away at his hardest speed.

狗进了，退了，停了片刻，以最快的速度冲走了。

They scent the lion at a great distance; and when they hear his voice, they scour away over the desert like the wind.

它们很远就能嗅到狮子的气味；一旦它们听到叫声，就会在荒漠四散奔逃。