瞎火

dǎ le liù fā pào dàn qí zhōng yī fā shì xiā huǒ de

打了六发炮弹，其中一发是瞎火的。

Six shells were fired and one of them was a dud.

zhè pī zǐ dàn zhì liàng zhēn chà zhè yòu shì yī kē xiā huǒ de

这批子弹质量真差，这又是一颗瞎火的。

The shells are of poor quality, there is another dud here.

pào dàn yòu xiā huǒ le

炮弹又瞎火了。

The shell failed to explode again.