Monotactic
构形的单中心规整性
🗣️ 情景例句
I'll be right back.
我马上就回来。
He is playing on the see-saw in the yard.
他正在院子里玩跷跷板。
What?Speak up. Penny.I'm afraid I can't hear you.
什么？彭妮，大声一点。我可听不见你念的。