水滴汇成溪，稻穗集成束 "Drops of water join to make a stream; and ears combine to make a crop."

活体心血汇成的海 aseaofblood ; bloodbath ; a sea of blood

外汇成交单 exchange contract

是我的泪水汇成了它 of all the tears i've cried

五种声音汇成 Get Funky

涓滴之水汇成洋 Little drops of water make the mighty ocean

外汇留成制度 the system of allowing enterprises to retain a certain portion of foreign exchange earnings

人民币汇率形成机制 the mechanism for setting RMB exchange rates ; the RMB exchange rate regime ; rmb exchange rate formation mechanism