Introductive
a. 介绍的, 前言的, 序文的
🗣️ 情景例句
Please. That sounds good.
听起来不错，请给我弄一杯。
How long have they been married?
他们结婚多长时间了？
2% for prompt payment, net in thirty days.
立即付款的话可以有九八扣，三十天内付款需付全额。