3 sentences

1. 出外旅游可以长见识。

   chū​wài lǚ​yóu kě​yǐ zhǎng jiàn​shi.

   Traveling can broaden one's horizons.

   Source: Dong Chinese Dictionary

2. 旅游能增长见识，充实耳目。

   lǚ​yóu néng zēng​zhǎng jiàn​shi, chōng​shí ěr​mù.

   Traveling can broaden one's knowledge and enrich one's experiences.

   Source: Dong Chinese Dictionary

3. 他经常利用闲暇时间阅读书籍，以增长见识。

   tā jīng​cháng lì​yòng xián​xiá shí​jiān yuè​dú shū​jí, yǐ zēng​zhǎng jiàn​shi.

   He often uses his spare time to read books to broaden his horizons.

   Source: Dong Chinese Dictionary