Inobtrusive
a. 客气的, 谦虚的,不冒失的
🗣️ 情景例句
Well, it's a very easy operation, Carl.
这是个很简单的手术 Carl。
It is no use crying over spilt milk.
泼水难收。
They play it like this, six students stand in a row in front of the class.
6个学生在全班前面站成一排。