A mat-forming perennial grass(Cynodon dactylon), widespread in warm regions and important as a lawn and pasturage grass in the southern United States.It is also common as a weed.是什么意思_A mat-forming perennial grass(Cynodon dactylon), widespread in warm regions and important as a lawn and pasturage grass in the southern United States.It is also common as a weed.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句