Polytrope
多变性, 多方曲线
🗣️ 情景例句
He never drinks except on special occasions.
除非在特别场合，他从不喝酒。
You should wear a something warm, It's chilly today.
你应该穿暖和一些的衣服，因为今天很凉。
Is the production line fully automatic?
生产线是全自动的吗？