林木良种审定规范: the standard of examination and approval of improved varieties of forest tree
经过: 1.(从某处过) pass; go through; go by 短语和例子这汽车经过北海公园吗? does the bus pass the beihai park? 她从这儿经过时没有一次不停下来问候一番。 she never passes without stopping to say hello.2.(通过) as a result of; after; throu
