The Marines fired back with a grenade launcher.

海军陆战队用手榴弹发射器反击。

《柯林斯英汉双解大词典》

Now, I can have a M203 (an overunder M16 grenade launcher) which is not crew-served.

现在，我可以拥有 M203（M16 双筒上下重叠的榴弹发射器）了，不需要乘员就可以使用。

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The XM29 was intended to be a shoulder-fired, semi-automatic grenade launcher in 20 mm calibre and to incorporate a compact, lightweight 5.56 mm rifle as a back-up weapon.

XM 29确定为一种抵肩射击，20毫米口径单发自动榴弹发射器并结合一个紧凑型，重量轻的5.56毫米步木仓做为后备武器。

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Elliott shows CNN one video of a Syrian rebel fighter with a grenade launcher tucked into his shoulder.

CNN: SHARE THIS

But he did not kill a child in Baghdad's Sadr City area who had a rocket-propelled grenade launcher.

CNN: Ex-Navy sniper killed at Texas gun range

On other convoys along those same roads, Marissa's husband, Specialist Charlie Bootes, manned a Mark-19 fully automatic grenade launcher.

NPR: Waiting and Dreading: Families in War Time