【first】first impression 第一印象;the first lady 第一夫人;lady first 女士優先;first-class seat 一等座(高鐵); first class 頭等艙;love at first sight一見鍾情; first-tier city一線城市;first of all 首先;first gear 一檔(汽車);the first I knew/heard 我第一次知道/聽說;in the first place一開始;First step is always the hardest. 萬事開頭難。There is always a first time for everything. 凡事都有第一次。