这个应用程序非常方便实用。

zhège yìngyòng chéngxù fēicháng fāngbiàn shíyòng.

This application is very convenient and practical.

这个应用程序非常受欢迎，很多人在使用。

zhège yìngyòng chéngxù fēicháng shòu huānyíng, hěn duō rén zài shǐyòng.

This application is very popular, many people are using it.

他在工作中经常应用新的技术。

tā zài gōngzuò zhōng jīngcháng yìngyòng xīn de jìshù.

He frequently applies new technologies in his work.