The regions differ in size, but not in kind.

这些地区大小各异，但类型相同。

《牛津词典》

Rivers can differ in size and there is no strict rule on how big a flow of water must be to be called as a river.

河流的流域会有不同，对于有多大的流量才能被称为河流没有严格的规定。

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The two gloves differ in size.

这两只手套尺寸不同。

youdao

Just as economies differ in size, the two authors show, they also vary in complexity.

ECONOMIST: Economics focus

Depending on its origin, a graft can differ in size, thickness and how fast it generates tissue.

CNN: Lab-created skin helps wounds heal

Because individual hospitals differ in size, they are compared by a standard measure of the number of cases per 1, 000 bed days.

BBC: NEWS | UK | England | Devon | Hospital bug under the spotlight