By late in the afternoon they could hear distant mortar shells slamming into the desert.

下午晚些时候，可以听到远处的迫击炮声在沙漠里轰响。

youdao

As their mortar shells slammed into the cement walls and aluminum roofs of our hospital, I called my daughters, who were both out of the country at the time.

当他们的迫击炮弹重重落在我们医院的水泥墙和铝制屋顶上的时候，我拨通了女儿的电话。她们当时都在国外。

youdao

It can also destroy mortar shells in mid-air.

VOA: standard.2010.07.20

Using a mortar and pestle, the fruits are slightly pounded to remove the shells from the fruits without breaking the seed inside."

VOA: special.2011.06.14

She said it would take far more than 48 of the small mortar shells to produce the explosions seen in Boston.

WSJ: Boston Bombing Suspects Roused by Jihadist Thought

Also on Monday, the United Nations announced that it will move about 100 foreign staff out of Syria after mortar shells fell near their hotel in Damascus.

BBC: Syria rebel commander Riad al-Asaad wounded by blast