3 sentences

1. 他衔命出使各国。

   tā xián​mìng chū​shǐ gè guó.

   He was commissioned to visit various countries.

   Source: Dong Chinese Dictionary

2. 张骞出使西域，开辟了丝绸之路。

   Zhāng Qiān chū​shǐ Xī​yù, kāi​pì le Sī​chóu​zhī Lù.

   Zhang Qian went to the Western Regions as an envoy and opened up the Silk Road.

   Source: Dong Chinese Dictionary

3. 汉武帝派遣张骞出使西域以寻找大月氏。

   Hàn Wǔ​dì pài​qiǎn Zhāng Qiān chū​shǐ Xī​yù yǐ xún​zhǎo Dà Yuè​zhī.

   Emperor Wu of Han dispatched Zhang Qian to the Western Regions to find the Da Yuezhi.

   Source: Dong Chinese Dictionary