Meaning of pǐ:
匹
(bound form) matching; comparable to; (bound form) alone; single; one of a pair; classifier for horses, mules etc (Taiwan pr. [pi1]); classifier for cloth: bolt; variant of 匹[pi3]; classifier for cloth: bolt
Tāmen de yīfu yánsè hěn pǐpèi.
他们的衣服颜色很匹配。
Their clothes' colors match very well.
Zhèr yǒu yī pǐ mǎ.
这儿有一匹马。
There is a horse here.
Nà pǐ mǎ zài cǎodì shàng bēnpǎo.
那匹马在草地上奔跑。
That horse is running on the grassland.
Zhè kuài bù mài yībǎi yuán yī pǐ.
这块布卖一百元一匹。
This piece of cloth sells for one hundred yuan per bolt.
Wǒ jīntiān kàn dàole yī duì mǎ, tāmen shì yī duì hǎo pǐ.
我今天看到了一对马,它们是一对好匹。
I saw a pair of horses today; they are a good match.
Tā mǎile yī pǐ hěn piàoliang de bù.
他买了一匹很漂亮的布。
He bought a very beautiful bolt of cloth.
horsepower
Zhè liàng chē yǒu sānbǎi pǐ mǎlì.
这辆车有三百匹马力。
This car has three hundred horsepower.