【经】 approved ship
check out; eligibility; measure up; up to grade
【医】 qualification
【经】 past muster
barque; boat; sailer; ship; shipboard; vessel
【医】 scaph-
both; double; even; twin; two; twofold
【化】 dyad
【医】 amb-; ambi-; ambo-; bi-; bis-; di-; diplo-; par