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first advance
超前工作面
first advance
first aid
first aid kit
first aid of fracture
first aid treatment
first aider
first amendment
first amplifier valve
first anal vein
first and foremost
first and last
first and paramount lien
first angle projection
first angle system
first annealing
first anode
first answer print
first appeal
first application
first appointment
first approximation
first approximation t...
first arch syndrome
first arrival
first arrival time
First Article
first article configu...
first article inspection
first attack
first attribute
first audio stage
first audit
first authentic copy
first author
first axillary
first azimuth method
first backcross gener...
first ballot
first basal cell
first base
first baseman
first batch
first batch of newly-...
first beater
first beneficiary
first beneficiary of ...
first bit
first bite
first blow
first body
first born
first bottom
first boundary value
first boundary value ...
first boundary volume...
first bounded interva...
first break
first break time
first breaker card
first broadcast
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