界河的英文：
river
The Rio Grande marks the border between Mexico and the USA.
里奥格兰德河是墨西哥和美国之间的界河.
n. 河，江，川；水道；巨流；大量
adj. 河栖的，生长在河里的
subsequent river
后成河
a river the of lava
熔岩的巨流
They snagged the river.
他们为河流清除了暗桩。
This river is ten times the length of that river.
这条河的长度是那条河的十倍。
Tong guan is the meeting of the Yellow River and the Wei River.
潼关是黄河和渭水的会合处。