4 sentences

1. 骏马甩动着马尾，驱赶着身边的苍蝇。

   jùn​mǎ shuǎi​dòng zhe mǎ​wěi, qū​gǎn zhe shēn​biān de cāng​ying.

   The steed flicked its tail to drive away the flies.

   Source: Dong Chinese Dictionary

2. 这把二胡的弓是用马尾做的，音色非常优美。

   zhè bǎ èr​hú de gōng shì yòng mǎ​wěi zuò de, yīn​sè fēi​cháng yōu​měi.

   The bow of this erhu is made of horsehair, and its tone is very beautiful.

   Source: Dong Chinese Dictionary

3. 制作二胡弓弦需要用到优质的白马尾。

   zhì​zuò èr​hú gōng​xián xū​yào yòng​dào yōu​zhì de bái mǎ​wěi.

   Making Erhu bowstrings requires high-quality white horsehair.

   Source: Dong Chinese Dictionary

4. 她今天扎了一个利落的高马尾去上学。

   tā jīn​tiān zā le yī gè lì​luo de gāo mǎ​wěi qù shàng​xué.

   She went to school today with a neat high ponytail.

   Source: Dong Chinese Dictionary