Meaning of bǐ:
笔
pen; pencil; writing brush; to write or compose; the strokes of Chinese characters; CL:支[zhi1],枝[zhi1]
Wǒ jīntiān mǎi le yī zhī xīn bǐ.
我今天买了一支新笔。
I bought a new pen today.
Wǒ zài shāngdiàn mǎi le yī zhī xīn bǐ.
我在商店买了一支新笔。
I bought a new pencil at the store.
Tā yòng máobǐ xiěle yī fú zì.
他用毛笔写了一幅字。
He used a calligraphy brush to write a piece of calligraphy.
Tā yòng qiānbǐ zài zhǐ shàng xiězì.
他用铅笔在纸上写字。
He writes on the paper with a pencil.
Tā yòng máo bǐ xiě zì.
他用毛笔写字。
He writes characters with a brush pen.
Zhè zhī bǐ shì wǒ zuì xǐhuān de.
这支笔是我最喜欢的。
This pen is my favorite.
classifier for sums of money, deals
Zhè bǐ jiāoyì fēicháng chénggōng.
这笔交易非常成功。
This deal was very successful.