cmhc的介绍里有这么一段: CMHC is Canada’s premier provider of mortgage loan insurance, mortgage-backed securities, housing policy and programs, and housing research. $ O. W0 m5 {/ Q- `0 B$ x+ t5 q) p+ l. r( j
mortgage-backed securities不就是“两房”做的房地产为抵押品的债券吗。1 k4 h' z# W4 u. x