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保证--证明
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国际贸易词汇手册
certify
证明,保证
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clock rate
clock rate
clock rate
clock skew
clock star
clock tick
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clock time fuze
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clockwise
clockwise rotation
clockwork-motor camera
clod
clod
clod
clod crusher
cloddy-pulverescent structure
clodhopper
clodronic acid
cloethocarb
clofarabine
clofazimine
clofentezine
clofibrate
clofibrate
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