confluent differential equation

例句：

1. 1. The river is confluent with the sea at this point.
   这条河在这一点与海汇合。
2. 2.The scientists are trying to understand the confluence of factors that affect the climate.
   科学家们正在试图理解影响气候的各种因素的汇合。
3. 3.The city's economy is a confluent of different cultures and industries.
   这座城市的经济是不同文化和行业的汇合。