2 sentences for 妹子 (mèi​zi)

1. 街上有不少漂亮的妹子。

   jiē shàng yǒu bù​shǎo piào​liang de mèi​zi.

   There are quite a few pretty girls on the street.

   Source: Dong Chinese Dictionary

2. 这小妹子性格很活泼，家里的长辈们都非常疼爱她。

   zhèi xiǎo mèi​zi xìng​gé hěn huó​po, jiā​lǐ de zhǎng​bèi men dōu fēi​cháng téng'ài tā.

   This little girl has a very lively personality, and the elders in her family all dote on her.

   Source: Dong Chinese Dictionary