Internal net内部网络internaladj.国内的；内部的；身内的internal buoyancy appliance内部浮力装置internal combustion turbine燃气轮机,内燃式透平internal conical refraction内锥形折射internal thermal resistance内热阻internal accounting control内部会计控制internal partition function内分配函数Internal hospital infection院内感染internal conversion routine内部转换程序internal control of society社会内在控制internal heat gain patterns室内发热模式

1. There was a rapid increase in internal trade.
   国内贸易迅速增长。
2. The interior trade is very prosperous.
   国内贸易非常繁荣。