to lose track of time
lose
lu:z
looz
track
træk
trāk
of
ɒv
ov
time
taɪm
taim

英語での「lose track of time」の定義と意味

to lose track of time
01

to have no idea how much time has passed or what has happened 

to [lose] track of time definition and meaning
慣用句
I lost track of time while reading and missed my bus. 
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