half-staff是什么意思
中文翻译与英英解释
n.,vt.
＝ half-mast.
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-mast,
n.,vt.
＝ half-mast.
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-mast,