The company had engineered plenty of products, but manufacturing them was virgin territory.

Despite a mediocre grade in English, Pat just managed to sneak in to the university.

A subset of a metric space is clopen iff it is both closed and open. A metric space is called zero-dimensional iff there is a base for the open sets consisting of clopen sets.

There was no road, nor any wood-man’s path, But the thick umbrage, checking the wild growth Of weed and sapling […]