Brainteaser
n. 难题, 谜
✅ 同义词
🗣️ 情景例句
Sure, what do you want?
可以啊。什么事
Don't forget to print airmail on the letter.
不要忘记在信封上印上航空邮件
He built a glass wall through which he could watch what went on inside.
他建造一堵玻璃墙，透过玻璃墙他能够观察里面发生的事情。