catch someone's eye idiom
引起…的注意，吸引…的目光
to get someone's attention
A sudden movement caught my eye. 突然的一动引起了我的注意。
C2 （尤指通过注视）引起注意
to get someone's attention, especially by looking at them
I tried to catch the waiter's eye, so we could order. 我努力想引起服务员的注意，这样我们就可以点菜了。
C2 （因为迷人或与众不同而）引人关注，吸引目光
to be attractive or different enough to be noticed by someone
It was the unusual colour of his jacket that caught my eye. 他的夹克衫的颜色与众不同，一下就吸引了我的目光。