present tense | |
I/you/we/they | refine |
he/she/it | refines |
present participle | refining |
past tense | refined |
past participle | refined |
We've refined the system since it was first launched. 自这个系统首次投入市场到现在我们已对它进行了改进。
👨🏻🏫 Mr. Ng 麥美倫詞典 📚 – macmillan.mister5️⃣.net
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