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315 Activities V
exact: like: hệ chuyên gia
VNEN 
hệ chuyên gia * ☊ 
expert system * ☊
[ hệ ] : branch, system; generation
[ chuyên ] : (1) to transfer, transport, carry; (2) to concentrate on, specialize in, focus on
[ gia ] : domicile, habitation, abode; to increase, add