one of two or more thing that are exactly alike; copy
double, multiply by two
be〔make〕 exact copy of
"he always carried extras in case of an emergency"
"he made a duplicate for the files"
"a duplicate key"
"He could never replicate his brilliant performance of the magic trick"
"The polished surface twinned his face and chest in reverse"
"Could you please duplicate this letter for me?"
"The population doubled within 50 years"
The duplicate copy of Florio, which the British Museum purchased.
出自： R. W. Emerson
She never ordered one thing of a kind, but duplicated each item by the dozens.
出自： C. Beaton
The formation..more exactly duplicated the geological structure of Saudi Arabia's richest oil field.
出自： J. Raban
Do not attempt to duplicate any stunts that are beyond your own capabilities.