Bandgaps
n. 能带隙
🗣️ 情景例句
Hello, Air China Flight Reservations. May I help you?
喂，你好，中国航空公司订票处，需要帮忙吗？
One good turn deserves another.
以德报德。
Do you often have sports at school?
你在学校经常参加体育活动吗？