| 单词 | root system |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔developed〕The younger plant has a less developed root system.幼年植物的根系不太发达。韦氏高阶〔fibrous root〕A root system made up of many threadlike members of more or less equal length, as in most grasses.纤维根：由许多几乎等长的线状须构成的一种根系，如在大多数草中美国传统〔system〕Palm trees have an unusually strong root system.棕榈树拥有异常强大的根系。外研社新世纪 |
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