Rosie, although small, could pack a hefty punch.

罗西虽小，出手却相当有劲。

We have a hefty dossier on his exploits in the war.

关于他在战争中英勇事迹,我们有相当多资料。

The film also contains a hefty dose of comedy.

这部电影同样带有浓厚喜剧色彩。