By the third day they might be out of the round pen and in a big arena and sometimes by the forth day the colts may be out on the trail or pasture or even trailing cattle.是什么意思_By the third day they might be out of the round pen and in a big arena and sometimes by the forth day the colts may be out on the trail or pasture or even trailing cattle.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句