あの店、一見さんでも入れるのかな。
I wonder if that restaurant accepts unfamiliar customers.

一見して、父のどこか具合が悪いことがわかった。
I saw at a glance that there was something the matter with my father.

この問題は一見簡単そうだが実は難しい。
This problem seems to be easy on the surface, but it's really difficult.