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origin of heat
热源
origin of heat
origin of hills
origin of infection
origin of life
origin of living mate...
origin of longitude
origin of lunar surface
origin of mountains
origin of muscle
origin of natural gas
origin of nuclei
origin of primary per...
origin of replication
origin of rifling
origin of species
origin of stand
origin of target noise
origin of the atmosphere
origin of the solar s...
origin of the solar s...
origin of the trajectory
origin of transition ...
origin of vector
origin period
origin port address
origin principle of t...
origin recognition co...
origin road
origin rule
origin station
origin stop
origin subarea field
origin subarea field ...
origin subport address
origin system
origin time
origin time of earthq...
origin vector
origin-destination su...
original
original acquisition
original acquistition
original advances
original agreement
original and derivati...
original antigenic sin
original appearance
original arbitration ...
original architecture
original argument
original article
original articles
original artist
original assigner
original austenite
original author
original bag wool
original balance
original base
original bed
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