After this speech was made, the old couples crept into their shells, and never more came out.

讲完这番演说以后，这对老夫妇就钻进他们的壳里去，再也不出来了。

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Explosive shells torn into the walls of the embassy.

爆炸的炮弹炸穿了大使馆的墙壁。

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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。

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They built artillery shells into the ceiling and the floor.

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More recently, the federal government, along with Delaware and New Jersey, tried to improve the wild-shellfish habitat by dropping millions of clam shells into the bay, which helps oysters mature by giving the larvae something to attach to.

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"After the dissuasion by means of whistle-blowing, shouting and hand-flag guiding was of no avail, the Chinese naval vessels fired two red signal shells into the sky as a warning, and the signal shells burned out and extinguished in the air, " Xinhua quoted the official as saying.

BBC: China 'fired flares' at Vietnam boat in South China Sea