But the Drosary were aliens, complete with alien customs and ideals, something one couldn't lose sight of.

It takes time to get used to alien customs, I suppose.

Among migrants, the poorly educated Yi youths are at the bottom of the pecking order, with their strange language and alien customs.

An alien custom, no doubt, as inexplicable and distracting as most alien customs.

Kirk wanted to ask why, but he had seen too many alien customs during his years of explorations to be truly surprised by any culture's odd habits.

He's not really stupid, you know, he simply has no patience with strange planets and alien customs.

Kay is proficient in many alien languages and has knowledge of alien customs and rituals.

As did most Klingons, Worf considered humor an annoying alien custom.

Explorers spend a lot of time learning about alien customs; knowledge like that helps you survive on strange planets.

It is a foolish alien custom which we see no reason to imitate.