He has a forge: he blows the fire with a great pair of bellows, to make the iron hot.

他用一双风箱吹火让铁烧的更红。

A pair of bellows consists of two rounded pieces of thin wood, which are joined together at the edges by a folded piece of leather.

一副风箱包括两块轻薄的圆形木片, 通过边缘处一片交叠的皮革固定在一起。

It was a large apartment, full of coal-dust, bristling with hammers, pincers, bars, and old iron of every description;and in one corner burned a fire in a small furnace, where puffed a pair of bellows worked by a boy.

工场宽大，里面到处都是炭和灰，还有各式各样的锤子、镊子、铁棒及旧铁等类的东西。屋的一隅燃着小小的炉子，有一少年在抗风箱。