ab extra

• adv. 外来

ab extra的用法和样例：

例句

用作副词 (adv.)

1. The Spartina Alterniflora is the extra category that is fit to the tidal flat in Jiangsu.
   互花米草人工盐沼就是适合于在江苏滩涂重建盐沼的外来种。