🧩 词语组成解析
birch
[bə:tʃ]
n. 桦树，桦木;（鞭打用的）桦条;
vt. （用桦条）抽打，鞭挞;
🗣️ 情景例句
He's on his way up.
他的事业蒸蒸日上。
What do you want?
干嘛？
It doesn't matter.
没关系。