怀旧: to feel nostalgic, nostalgia...
能: can, may, capable, energy, able...
落下: to fall, to drop, to land (of projectile)...
言语: to speak, to tell...
联络: to get in touch with, to contact, to stay in contact (with), liaison, (math.) connection...
飞行员: pilot, aviator...
多元: poly-, multi-, multielement, multivariant, multivariate (math.)...
剧本: script for play, opera, movie etc, screenplay, scenario...
抱负: aspiration, ambition...
正面: front, obverse side, right side, positive, direct, open...
