Nsta
abbr. National School Transportation Association 国家学校运输协会; National Science Teachers Association 全国自然科学教师协会
🗣️ 情景例句
It's getting late. Please excuse me, but I must leave right away.
时间不早了。对不起，我得赶紧走了。
You're welcome.
不客气。
It was a pleasure. Bye!
不客气。再见！