便于

biàn yú

easy to, convenient for

于是站起来

yú shì zhàn qi lai

So stand up

于是我吻了她

yú shì wǒ wěn le tā

So i kissed her

于是我吻了他

yú shì wǒ wěn le tā

So i kissed him

于是我开始数

yú shì wǒ kāi shǐ shǔ

So I started to count

铁很便宜

tiě hěn pián yi

Iron is very cheap

这本书是关于树

zhè běn shū shì guān yú shù

This book is about trees

罐头很便宜。

guàn tou hěn pián yi。

Canned food is cheap.

她于晚上八点回家。

tā yú wǎn shang bā diǎn huí jiā。

She comes home at eight o'clock in the evening.

我终于通过了考试

wǒ zhōng yú tōng guò lè kǎo shì

finally I passed the exam

罐头汤很方便。

guàn tou shāng hěn fāng biàn。

Canned soup is convenient.