Compounds
n. 场地( compound的名词复数 ); 复合物; （筑有围墙的）院子; 复合词\\nv. 调和( compound的第三人称单数 ); 使混合; 使严重; 调停
🗣️ 情景例句
Birds are good pets, they can wake you up by singing in the morning.
鸟是很好的宠物，它们早上的歌声可以将你从梦中唤醒。
I know the boy whose father is a scentist.
我知道那个男孩的父亲是科学家。
Now move the hand to and fro and around but not up and down.
然后把手前后左右以及旋转摆动，但不要上下摆动。