🧩 词语组成解析
n. 沃尔特（男子名）
piston
['pɪstən]
n. <机>活塞;
🗣️ 情景例句
She won't be happy when she sees what you've done with your hair.
当她看到你将头发搞成这个样了了，就高兴不起来了。
I know the boy whose father is a mailman.
我知道那个男孩的父亲是邮差。
No, they aren't. They're on the floor.
不，不在。它们在地上。