If you feel that your English is not very good, I suggest that you can use some English translation software on the Internet to translate. Usually, translation with a software will be literal translation, which means that there are not many grammatical errors, but it will be blunt to read.

And if you want to polish the English of the paper, you must have a higher level than the English directly translated. At least, not only should the sentences be fluent without grammatical errors, but also people will feel that they have advanced vocabulary and sentences are properly connected, so you must have a certain level of English.

If the budget at hand is not enough, it is suggested that you can find an English translation software first, translate it first, or look at the English translation software for translation, then make the general meaning of the sentence smooth and similar, and then choose better sentences to put into the original text, which can barely add a lot of color to the English of the paper.

If the budget is sufficient, you can find a special paper finishing company to polish your paper English. After all, it costs money, so it will definitely be much better than machine translation in English polishing.