dà shì
major event
major political event (war or change of regime)
major social event (wedding or funeral)
(do sth) in a big way
CL:件[jian4],樁|桩[zhuang1]
dà shǐ
ambassador
envoy
CL:名[ming2],位[wei4]
dǎ shí
to go in search of food (of animals)
to take medicine for indigestion or gastro-intestinal upsets