make sheep's eyes at sb
Means: to look at someone in a way that shows you love them
请看例句:
The lovers were making sheep's eyes at each other over the table.
恋人隔着桌子互送秋波。
Did you see that creep eyeing up every woman at the party?
你看见那个讨厌的家伙了吗?他对聚会上的每个女人都垂涎欲滴地打量不停。