英语语法分析

Natalie Portman plays the Earthling scientist.

娜塔莉·波特曼饰演凡人女科学家。

But Portman is still keeping her fans guessing about her future plans.

但波特曼还是让她的影迷捉摸不定她未来的计划。

Portman was set to play the role of Cathy, daughter of one of the story's lead characters.

波特曼本来是要饰演凯茜，故事主角之一的女儿。