Pre-conferences
(pre-conference 的复数) n. 预备会议
🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
n. 会议（conference的复数形式）
🗣️ 情景例句
Richard! I haven't brushed my hair. Richard
我头发都没有梳。
John and I are old friends.
我和约翰是老朋友了。
I'm glad our negotiation has come to a successful conclusion.
我很高兴这次洽谈圆满成功。