1、It was a day of national mourning with flags flying at half-mast everywhere.
這是一個全國哀悼的日子，到處都下了半旗。

2、The country lowered its flag to half-mast to express sorrow for people died in the earthquake.
該國降半旗以表達對地震死難者的悲痛。

3、National flags flew at half-mast in public places, at Chinese embassies and at consulates.
全國和駐外使領館下半旗志哀。

4、It is a day of nation mounting with flag flying at half-mast everywhere.
這是個全國哀悼的日子，全國到處都降半旗。

5、It was a day of national mourning with flags flying at half-mast everwhere
這是一個全國哀悼的日子，到處都下了半旗。

6、And as 100% of the company, the opportunity costs of operating at half-mast were extremely high.
作為我公司的老板和唯一成員，為這半吊子工作狀態(tài)所付出的機會成本實在太高了。

7、The department is also expected to lower its flag at Immigration Tower to half-mast today.
入境處今日亦會下半旗致哀。

half-mast翻譯