armed robbery
noun [ C or U ] uk/ˌɑːmd ˈrɒb.ər.i/ us/ˌɑːrmd ˈrɑː.bɚ.i/
武装抢劫，持械行劫
the crime of stealing from somewhere or someone using weapons
He served 16 years in prison for armed robbery. 他因为持械行劫被判入狱16年。
Police are appealing for witnesses after an armed robbery at a casino. 武装抢劫赌场事件发生以后，警方呼吁目击者能够站出来。