Concentration gradiant
[电] 浓度梯度
🧩 词语组成解析
🗣️ 情景例句
Hello, darling.
哈喽， 亲爱的。
The leopard cannot change its spots.
江山易改，本性难移。
Refuse politely any cold drink from an unknown source.
应谢绝任何不明来源的冷饮。