Levulinamide
4-氧(代)戊酰胺
🗣️ 情景例句
It's nice to see you again.
很高兴再见到你们。
At night, all cats are grey.
猫在夜晚皆灰色（丑妍暗中难分辨）。
We need to make a change on our last order.
上回的订单我们需要更改。