Kalchoids
铜锡锌三元合金
🗣️ 情景例句
She's enthusiastic about the new teaching method.
她对新的教学方法很热心。
How long will it take you to repair it?
你要多久才能修好它？
He led me into his room and hurriedly hid a large parcel under his desk.
他把我领进屋，慌忙把一个大包藏到了桌子下面。