Sca
abbr. 美国科学俱乐部联合会（Science Clubs of America）
🗣️ 情景例句
Why not give the people of Riverdale a clear choice?
为什么不让Riverdale的人民有一个明确的选择呢？
In good years corn is hay, in ill years straw is corn.
丰年五谷贱如草，荒年稻草贵如粮。
I have two cats. One is white, the other is black.
我有两只猫，一只是白猫，另一只是黑猫。