Upgrading
v. 升级；提高品位（upgrade的现在分词）
✅ 同义词
🔴 反义词
🗣️ 情景例句
She likes to go from man to man.
她的男友换了一个又一个。
Don't forget to come back.
不要忘记回来。
He had a good many friends here.
他在这儿有很多朋友。