keep an eye on什么意思解释？

keep an eye on的音标：keep an eye on的英式发音音标为：[ki:p æn ai ɔn]keep an eye on的美式发音音标为：[kip ən aɪ ɑn]...

He had been sent here to keep an eye on Benedict.他被派到这儿监视贝内迪克特。We can't leave no one to keep an eye on things.我们不能 搞 “空城计”.Please keep an eye on the stove in case the milk boils.劳神照料炉上的牛奶,别沸溅了....