中文翻译与英英解释

vt. 下半(旗)。
2.n. 半旗位置 (fly [hang, hoist] a flag at half-mast 下半旗。 Half-mast high 在半旗位置)。

a position some distance below the top of a mast to which a flag is lowered in mourning or to signal distress
同义词：half-staff,

Half mast is the term describing flying a flag below the summit of the flagpole (mast). This is done in many countries as a symbol of respect, mourning, or distress.