We found hundreds of sheep tracks, and once some cow tracks—but no bicycle tracks.

我们发现了数百条羊的踪迹， 曾经还发现了一些牛的踪迹， 但没有自行车踪迹。

Nonetheless, he was curious so we decided to follow the bicycle tracks back in the direction of the school.

尽管如此，他还是很好奇，所以我们决定沿着自行车道回到学校的方向。

For most of the morning, the only tracks we found were those of sheep and cows, but then at midday we came to something that was certainly a bicycle track.

在上午的大部分时间里，我们找到的唯一痕迹是绵羊和牛的痕迹，但到了中午，我们来到了一条肯定是自行车道的地方。