Prefacing
n. 前言；引语\\nvt. 为…加序言；以…开始\\nvi. 作序
🗣️ 情景例句
He was ill at ease at her birthday party.
他在她的生日宴聚会中心神不宁。
Lemonade on a hot day is very refreshing.
在暑天喝柠檬水，会使人精神抖擞。
I like reading English books, but they're sometimes rather hard.
我喜欢看英语书，但有时候英语书相当难读。