Idioms
zero hour
the exact time when an attack or other military action will start
The air force planes waited until zero hour in order to begin their bombing mission.
zero in on
zero-sum game
zonk out
zoom in on (someone or something)
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set eyes on (someone or something)
swan song
do a snow job on (someone)
leap to conclusions
look like (something)
feed (someone) a line
step right up
keep after/at (someone)
run afoul of (someone or something)
lost-and-found
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Fact
The average life span of a single red blood cell is 120 days
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