4 sentences

1. 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

2. 这种培训可以充实你的专业知识。

   zhè zhǒng péi​xùn kě​yǐ chōng​shí nǐ de zhuān​yè zhī​shi.

   This kind of training can enrich your professional knowledge.

   Source: Dong Chinese Dictionary

3. 他的生活过得既忙碌又充实。

   tā de shēng​huó guò de jì máng​lù yòu chōng​shí.

   His life is both busy and fulfilling.

   Source: Dong Chinese Dictionary

4. 这些新发现充实了他的论点。

   zhè​xiē xīn fā​xiàn chōng​shí le tā de lùn​diǎn.

   These new discoveries substantiated his argument.

   Source: Dong Chinese Dictionary