to  keep  an eye on  somebody or something
keep
ki:p
kip
an
ən
ēn
eye
ai
on
ɒn
on
somebody or something

英語での「 keep an eye on somebody or something 」の定義と意味

to keep an eye on somebody or something
01

to closely watch a person or thing, particularly in order to make sure they are safe 

to [keep] an eye on {sb/sth} definition and meaning
慣用句
くだけた
The security guard was instructed to keep an eye on the surveillance cameras to ensure the safety of the premises. 
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