🧩 词语组成解析
a. 被子的
tree
[tri]
n. 树;木料;树状图;宗谱;
vt. 把…赶上树;使处于困境;把鞋型插入（鞋内）;
🗣️ 情景例句
Because the United States is the most important trade partner.
因为美国是我们最重要的贸易伙伴。
No, I only wrote her one letter this year.
是的，今年我才给她写过一封信。
Traffic police are sometimes very polite.
交通警有时也很客气。