us要加the吗，in

需要加the，例如：

1、In the US， distance is measured in miles.在美国，测量距离以英里作单位。

2、The new drug has not yet been licensed in the US.这种新药尚未在美国获得许可。

3、He's a major in the US army.他是美国陆军少校。

4、What's the highest mountain in the US?美国哪座山最高