Actually, the journey that day was not too smooth. During those several days it had rained a good bit, and the road was wet. At the first slight error, the bus became bogged down in the mud and could not move.
其實那天的旅程並不太順利，因為那些天草原下了不少雨，路很泥濘，一不小心車就陷在泥裡起不來。