3 sentences

1. 克林顿总统在任期间美国经济增长强劲。

   Kè​lín​dùn zǒng​tǒng zài​rèn qī​jiān Měi​guó jīng​jì zēng​zhǎng qiáng​jìng.

   The U.S. economy grew strongly during President Clinton's term in office.

   Source: Dong Chinese Dictionary

2. 因在任期间表现不佳，他不幸被罢官回乡。

   yīn zài​rèn qī​jiān biǎo​xiàn bù jiā, tā bù​xìng bèi bà guān huí​xiāng.

   Due to poor performance during his term, he was unfortunately dismissed from office and sent back home.

   Source: Dong Chinese Dictionary

3. 那位总监在任期间，致力于改善当地的农田灌溉系统。

   nà wèi zǒng​jiān zài​rèn qī​jiān, zhì​lì​yú gǎi​shàn dāng​dì de nóng​tián guàn​gài xì​tǒng.

   During his tenure, the director was committed to improving the local farmland irrigation system.

   Source: Dong Chinese Dictionary