“sharply defined”造句，怎么用sharply defined造句

The mountain was sharply defined against the eastern sky.

The trench is most sharply defined on the eastern (continental) side: depth plunges rapidly from a few hundred meters (light blue) to several thousand meters (deep blue).

Fat droplets present a sharply defined interphase with the surrounding cyto-plasm.

The pathological examination showed a large number of sharply defined cell lumps which consist of shadow cells, basophilic cells and transitional cells in dermis.