Sca
abbr. 美国科学俱乐部联合会（Science Clubs of America）
🗣️ 情景例句
Is that all right with everyone?
各位有意见吗？
I bought 3 apples.
我买了三个苹果。
'Cats behave like well-trained paratroopers.' a doctor said.
“猫就像训练有素的跳伞队员，” 一位医生说。