2 sentences

1. 他的表现差强人意。

   tā de biǎo​xiàn chā​qiáng​rén​yì.

   His performance was barely satisfactory.

   Source: Dong Chinese Dictionary

2. 她凭着自己的努力，成为了业界知名的女强人。

   tā píng​zhe zì​jǐ de nǔ​lì, chéng​wéi le yè​jiè zhī​míng de nǚ​qiáng​rén.

   Through her own efforts, she became a well-known high-powered businesswoman in the industry.

   Source: Dong Chinese Dictionary