🧩 词语组成解析
alpha
['ælfə]
n. 希腊字母的第一个字母;
[医]甲胎蛋白
🗣️ 情景例句
They have an opening.
他们有一个空房间。
To travel by ship
乘船旅行
The books which are on the counter.
就是柜台上的那两本。