Nonstable
非[不]稳定的
🗣️ 情景例句
I'd like to see the doctor at the earliest possible time.
我想尽快看医生。
He has been to America.
他去过美国。[曾经有过的经验]
Refuse politely any cold drink from an unknown source.
应谢绝任何不明来源的冷饮。