keep one's eyes on与fix on 的区别?

keep one's eyes on与fix on 的区别? keep one's eye on keep one's eyes on keep an eye on的区别 to fix one’s eyes on fix one's eyes on(注视）造句 keep ears open 与keep eyes on的区别 求keep eyes on与keep an eye on的区别 fix one's eyes pay attention to(doing) sth注意,留意fix one’s attention/ eyes on 独立主格还是非谓语动词(fix one's eyes on) feast to eyes和feast one's eyes on的区别 fix one's attention on 是什么意思? focus one's eyes on