河的单词怎么写

　　I could sit and watch the river all day long.

　　我可以整天坐在这里看那条河。

　　The general had to get his troops across the river.

　　将军必须让部队过河。

　　They followed the line of the river for three miles.

　　他们沿着那条河走了三英里。

　　The scientists are taking water samples from the river.

　　科学家正从河中采水样。