breakthrough

n.突破，重大发现

break one's heart, break one's word, break out, break out into, break sth from sth, break the ice, break through, break to sb., break up, break with sb, break-dancing, break-in, break-out, breakable, breakage, breakaway, breakdown, breaker, breakfast, breakneck, breakup, breakwater, bream, breast, breast pocket, breast-feed, breast-high, breast-stroke, breastbone (also sternum), breastplate, breastwork, breath, breath test, breath-taking, breathalyse, breathalyser, breathe, breather, breathing, breathing-space,