Meaning of bèi:
bèi
倍
Numeral
(two, three etc) -fold; times (multiplier)
Zhèlǐ de fángjià yǐjīng shì liǎng nián qián de sān bèi le.
这里的房价已经是两年前的三倍了。
The house prices here are already three times what they were two years ago.
Tā de shōurù zēngzhǎngle sān bèi.
他的收入增长了三倍。
His income increased three times.
Noun
double; to increase or multiply
Zhè xiàng tóuzī de jiàzhí yǐjīng fānle liǎng bèi.
这项投资的价值已经翻了两倍。
The value of this investment has doubled.
Zhège shùzì zēngjiāle sān bèi.
这个数字增加了三倍。
This number has increased three times.
