2 sentences

1. 我对工程学一无所知。

   wǒ duì gōng​chéng​xué yī​wú​suǒ​zhī.

   I know nothing about engineering.

   Source: CCMatrix

2. 她现在在学工程学。

   tā xiàn​zài zài xué gōng​chéng​xué.

   She is currently studying engineering.

   Source: CCMatrix