You, I can tell, are a leading lady.

我看得出来你就是女主角。

She is the leading lady in the play.

她是剧中扮演女主角的演员。

I am the leading lady.

我是女主角。

She did the leading lady in several comedies.

她在若干喜剧中扮演过女主角。

She is the leading lady in graduation performance.

她是毕业演出里的主角。