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来源：雅诚德英语网
On the roof of the schoolhouse, pigeons cooed in low tones, and I said to myself as I listened to them.
学校的屋顶上，鸽子低声地咕咕地叫着，我一边听，一边寻思：“他们该不会强迫这些鸽子用德语唱歌吧？”
On the roof of the schoolhouse, pigeons cooed in low tones, and I said to myself as I listened to them.
学校的屋顶上，鸽子低声地咕咕地叫着，我一边听，一边寻思：“他们该不会强迫这些鸽子用德语唱歌吧？”