Upgrading
v. 升级；提高品位（upgrade的现在分词）
✅ 同义词
🔴 反义词
🗣️ 情景例句
You and Mommy used to take me on the ferryboat.
你和妈妈常带我坐渡船。
I usually feel timid in the presence of very bright people.
站在聪明人面前，我感到羞怯。
In June.
六月份。