单词	初育土
释义	初育土primitive soil
随便看	external female hermaphrodism external female pseudohermaphrodism external fertilisation external fertilization external field external file external file name external financing external firing boiler external fistula external flag external flag--ef external flag，ef external flow external flow vehicle external flue external fluidized bed heat exchanger external focusing external focusing telescope external focussing telescope external force external force feed external force field external fragmentation external frequency