。
Look around carefully.
Literal
Surroundings [object-を] well look [polite imperative-なさい].
辺り means 'the area around' or 'surroundings.' よく before 見る means 'carefully/well.' The ~なさい form is a polite-but-firm imperative often used by parents, teachers, or superiors — softer than 見ろ but still clearly a command.