belch|belched|belches

吃完饭后，他忍不住打了个响嗝。

After the meal, he couldn't help but let out a loud ___belch.

那辆旧卡车排气管喷出滚滚黑烟。

The old truck's exhaust pipe ___belched out thick black smoke.

火车引擎发出巨大的轰鸣声，喷出滚滚浓烟。

The train engine roars and ___belches out thick smoke.