Lǎo / shī / ràng / wǒ / men / gēn / jù / fēn / bù / tú / fēn / xī / jiàng / yǔ / liàng / de / biàn / huà老师让我们根据分布图分析降雨量的变化。The teacher asked us to analyze changes in rainfall based on the distribution chart.