f3generationsecond filial generation第二代: second generation杂种: hybrid; crossbreed; intercro ...杂种第二代: f3 generation; second filial generation子二代,杂交二代,二代杂种: second filial generation第一代杂种: f2 generation; first cross; first filial generation下载手机词典可随时随地查词查翻译
