NOISE知识效率集
downloadFile(url, path, [callback])
![downloadFile(url, path, [callback])](https://cdn.popsy.co/images/https%3A%2F%2Fwww.notion.so%2Fimage%2Fhttps%253A%252F%252Fassets.popsy.co%252Frails%252Factive_storage%252Fblobs%252Fproxy%252FeyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBcjREIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--00d332ba173da6ef659fb7044f06043291535c4f%252Fnoise.jpeg%3Ftable%3Dblock%26id%3D28ee5f70-e314-4525-afec-1687752c51eb%26cache%3Dv2?width=1500&optimizer=image)
