1 sentence

1. 虽然人脸识别已经在智能手机中普及，但用在动物上难度则要大得多。

   suī​rán rén​liǎn​shí​bié yǐ​jing zài zhì​néng​shǒu​jī zhōng pǔ​jí, dàn yòng zài dòng​wù shang nán​dù zé yào dà de duō.

   Although face recognition has become popular in smartphones, it is much more difficult to use on animals.

   Source: CCMatrix