【建】 cumulative double bond
accumulate; accumulation; cumulate; cumulation; heap; pile
【医】 accumulation
【经】 accumulate
both; double; even; twin; two; twofold
【化】 dyad
【医】 amb-; ambi-; ambo-; bi-; bis-; di-; diplo-; par
contract; crinkle; draw back; shrink; withdraw