Pentavalency
五价
🗣️ 情景例句
and maybe you can help me set the table.
也许你能帮我摆桌子。
May I borrow your umbrella?
我能借你的雨伞吗？
After I had sat down, he said that business was very bad.
待我坐下后，他说生意非常不景气。