Can you mark out the functions that can't be used for local retrieval? Now try one at a time, which functions can be used and which can't.
The grass https://www.fmz.com/bbs-topic/4158#%E7%AD%96%E7%95%A5%E5%9B%9E%E6%B5%8B
The grassThere are basically documentation, community tutorials, and a review of the specifics.