Firmer
a. 圆凿或凿子的；坚固的
🗣️ 情景例句
Danger.
小心，危险。
If there's anything else I can do, please call on me.
如果有任何事情我能效劳的话，请打电话给我。
Good morning, class! Who is on duty today?
同学们，早上好！今天谁值日？