D-Day

劍橋詞典

the day during the Second World War when the Allies began their invasion of Europe by attacking the coast of northern France
（二戰(zhàn)期間同盟國進攻歐洲的）登陸日
The D-Day landings began on 6 June 1944, when Allied forces invaded Normandy. 登陸日的登陸行動是從1944年6月6日同盟國軍隊進攻諾曼底開始的。

a day when something important will happen
大日子，重要的日子
After four hectic weeks of electioneering , candidates are preparing themselves for D-Day (= election day ) tomorrow . 經(jīng)歷了4周忙碌的競選活動后，候選人正在為明天的選舉投票作準備。 返回 D-Day