Undergrounder
n. 在地面下工作的人, 秘密组织成员, 地下铁道乘客
🗣️ 情景例句
Maybe I can help.
也许我能帮忙。
In college I majored in philosophy, What was your major?
大学时我主修哲学，你主修什么呢？
The figure seems all Right.
数目看起来是对的。