emerge one after another的意思|示意

美 / / 英 / /

层见叠出，层出不穷

层出不穷 ... 生产力productive force 层出不穷emerge one after another 试点工程pilot program ...

层出叠见 ... echo one another 互相策应 emerge one after another 层出不穷; 层出叠见 falling over one another 争先恐后 ...