波粒二象性

wave-particle duality in quantum mechanics

elephant / CL:隻|只[zhi1] / shape / form / appearance / to imitate

two / 2 / (Beijing dialect) stupid

nature / character / property / quality / attribute / sexuality / sex / gender / suffix forming adjective from verb / suffix forming noun from adjective, corresponding to -ness or -ity / essence / CL:個|个[ge4]

Poland / Polish / abbr. for 波蘭|波兰[Bo1 lan2]

wave / ripple / storm / surge

grain / granule / classifier for small round things (peas, bullets, peanuts, pills, grains etc)