我怎样才能使npm从另一个目录开始?

我通常cd进入应用目录，然后运行npm start.

I usually cd into the app directory and then run npm start.

我觉得应该使用某种方法使用路径参数运行npm start.但是， npm启动文档不包含此类功能.

It is my feeling that there ought to be some way to run npm start with a path parameter. But, the npm start documentation contains no such feature.

我尝试自己只是发现npm start ./myapp不起作用.有办法吗?

I tried myself only to find npm start ./myapp does not work. Is there a way to do that?