at half-mast降半旗
half-mast target半升靶
half-mast nationwide全国降半旗
half-rigged mast半装帆桅柱
half-mast belay半柱确保
flag at half-mast降半旗
Half-mast The Flag下半旗
Flags at Half-mast降半旗
fly a flag at half-mast降半旗;下半旗
PHRASE（习语） If a flag is flying at half-mast, it is flying from the middle of the pole, not the top, to show respect and sorrow for someone who has just died. 半旗 [usu PHR after v]