Note
Important update: Non-macOS users can use the ChatGPT API-based word translation browser plugin (supports syntax polishing) openai-translator to solve the urgent problem.

ChatGPT shows us the greatness of the GPT model, so I used ChatGPT's API to implement this Bob plugin for language polishing and syntax correction, which has the effect of being outstanding! Perfect replacement for Grammarly!
Install Bob, a translation and OCR software for macOS platform; openai-translator.bobplugin >= 1.0.0 and streaming output is enabled by default, and Bob version is required >= 1.8.0
Download this plugin: openai-polisher.bobplugin
Install this plugin: 
Go to OpenAI to get your API KEY
Fill in the API KEY into the input box of the API KEY in the Bob Preferences > Services > This plug-in configuration interface 
Install PopClip to realize the word marking and floating icon appears near the mouse 
This is just a small Bob plugin, and the most powerful one is Bob itself, paying tribute to its developer, ripperhe!