You want cities to agglomerate, to bring smart people together.

你希望城市能够集聚，将聪明汇聚一堂。

There's large fixed costs, IT costs, just to name one, but also expertise can agglomerate in institutions, and one would expect there to be actually benefits.

存在较大本， 比如IT本，但专业知识也会在机构中聚集，预期会有一些实际好处。

Workers want to be close to job opportunities, and companies want to be close to workers so the whole industry has agglomerated in just a handful of locations.

工希望靠近就业机会，而公司也希望靠近工，整个行业都聚集在了少数几个地点。

The solar system was formed around 4.5bn years ago, when a cloud of dust and gas collapsed under its own gravity into a disc, which in turn agglomerated into the sun and its planets.

太阳系形于大约 45 亿年前，当时一团尘埃和气体在自身重力作用下塌陷一个圆盘，然后又凝聚太阳及其行星。