今天一大早，一颗炸弹在一个拥挤的市场附近爆炸了。

Early this morning, a bomb ___exploded near a crowded market.

由于压力骤增，那个旧煤气罐爆炸了。

The old gas tank ___exploded due to a sudden increase in pressure.

幸好，那个装置意外爆炸时没有人受伤。

Thankfully, no one was hurt when the device ___exploded unexpectedly.