Upgradation
升级；改善；提高
🗣️ 情景例句
Hello. Susan Stewart calling Mr. Levine, please.
喂 ，Susan Stewart想跟Levine先生通话。
While there is life, there is hope.
留着青山在，不怕没柴烧。
Is the cut still painful?
伤口还在痛吗？