main lateral veins 2- or 3-paired, sometimes forming intramarginal vein, tertiary reticulation faint or nearly invisible;是什么意思_main lateral veins 2- or 3-paired, sometimes forming intramarginal vein, tertiary reticulation faint or nearly invisible;在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句