What does 倍 (bai | ばい) mean in Japanese?

The Japanese word

彼は私の三倍も稼ぐ。
kare wa watashi no san bai mo kasegu.
He earns three times as much as I. | He earns three times as much as I do. | He earns three times more than I do. | He earns three times more than me.

彼は二倍の運賃を払った。
kare wa ni bai no unchin o haratta.
He paid double fare.

彼は私の倍の給料を稼ぐ。
kare wa watashi no bai no kyūryō o kasegu.
He earns double my salary.

彼は私の給料の３倍稼ぐ。
kare wa watashi no kyūryō no san bai kasegu.
He earns three times as much as me. | He earns three times as much as I.

物価は２年前の２倍である。
bukka wa ni nen mae no ni bai de aru.
Prices are double what they were two years ago.

彼は通常の料金の２倍払った。
kare wa tsūjō no ryōkin no ni bai haratta.
He paid double the usual fare.

彼は私の三倍本を持っている。
kare wa watashi no san bai hon o motte iru.
He has three times as many books as I have.

彼の体重は１０年前の２倍だ。
kare no taijū wa ichi zero nen mae no ni bai da.
His weight is double what it was ten years ago.

私は彼の３倍の本を持っている。
watashi wa kare no san bai no hon o motte iru.
I have three times as many books as he. | I have three times as many books as he does.

物価は１０年前の倍になっている。
bukka wa ichi zero nen mae no bai ni natte iru.
Prices are double what they were ten years ago.

来年私はあなたの３倍の年齢になる。
rainen watashi wa anata no san bai no nenrei ni naru.
Next year I will be three times as old as you.

僕は彼の５倍の切手を持っているよ。
boku wa kare no go bai no kitte o motte iru yo.
I have five times as many stamps as he does.

私の姉は私の三倍本を持っています。
watashi no ane wa watashi no san bai hon o motte i masu.
My sister has three times as many books as I do.

彼女の家は我が家より２、３倍広い。
kanojo no ie wa wagaya yori ni, san bai hiroi.
Her house is two or three times as large as ours.

彼は私の数倍多くの本を持っている。
kare wa watashi no sū bai ōku no hon o motte iru.
He has several times as many books as I.

彼らはその量の２倍食べる必要がある。
karera wa sono ryō no ni bai taberu hitsuyō ga aru.
They need to eat double that amount.

富士山は六甲山のおよそ四倍の高さです。
fujisan wa rokkōzan no oyoso yon bai no taka sa desu.
Mt. Fuji is about four times as high as Mt. Rokko.

彼女は君の３倍の冊数の辞書を持っています。
kanojo wa kimi no san bai no sassū no jisho o motte i masu.
She has three times as many dictionaries as you do.

彼女は私の１０倍近く多くの英単語を知っている。
kanojo wa watashi no ichi zero bai chikaku ōku no eitango o shitte iru.
She knows ten times as many English words as I do.

	The Japanese word
	倍
	is pronounced
	bai \| ばい
	means
	double, two times

	Examples:
	彼は私の三倍も稼ぐ。 kare wa watashi no san bai mo kasegu. He earns three times as much as I. \| He earns three times as much as I do. \| He earns three times more than I do. \| He earns three times more than me.
	彼は二倍の運賃を払った。 kare wa ni bai no unchin o haratta. He paid double fare.
	彼は私の倍の給料を稼ぐ。 kare wa watashi no bai no kyūryō o kasegu. He earns double my salary.
	彼は私の給料の３倍稼ぐ。 kare wa watashi no kyūryō no san bai kasegu. He earns three times as much as me. \| He earns three times as much as I.
	物価は２年前の２倍である。 bukka wa ni nen mae no ni bai de aru. Prices are double what they were two years ago.
	彼は通常の料金の２倍払った。 kare wa tsūjō no ryōkin no ni bai haratta. He paid double the usual fare.
	彼は私の三倍本を持っている。 kare wa watashi no san bai hon o motte iru. He has three times as many books as I have.
	彼の体重は１０年前の２倍だ。 kare no taijū wa ichi zero nen mae no ni bai da. His weight is double what it was ten years ago.
	私は彼の３倍の本を持っている。 watashi wa kare no san bai no hon o motte iru. I have three times as many books as he. \| I have three times as many books as he does.
	物価は１０年前の倍になっている。 bukka wa ichi zero nen mae no bai ni natte iru. Prices are double what they were ten years ago.
	来年私はあなたの３倍の年齢になる。 rainen watashi wa anata no san bai no nenrei ni naru. Next year I will be three times as old as you.
	僕は彼の５倍の切手を持っているよ。 boku wa kare no go bai no kitte o motte iru yo. I have five times as many stamps as he does.
	私の姉は私の三倍本を持っています。 watashi no ane wa watashi no san bai hon o motte i masu. My sister has three times as many books as I do.
	彼女の家は我が家より２、３倍広い。 kanojo no ie wa wagaya yori ni, san bai hiroi. Her house is two or three times as large as ours.
	彼は私の数倍多くの本を持っている。 kare wa watashi no sū bai ōku no hon o motte iru. He has several times as many books as I.
	彼らはその量の２倍食べる必要がある。 karera wa sono ryō no ni bai taberu hitsuyō ga aru. They need to eat double that amount.
	富士山は六甲山のおよそ四倍の高さです。 fujisan wa rokkōzan no oyoso yon bai no taka sa desu. Mt. Fuji is about four times as high as Mt. Rokko.
	彼女は君の３倍の冊数の辞書を持っています。 kanojo wa kimi no san bai no sassū no jisho o motte i masu. She has three times as many dictionaries as you do.
	彼女は私の１０倍近く多くの英単語を知っている。 kanojo wa watashi no ichi zero bai chikaku ōku no eitango o shitte iru. She knows ten times as many English words as I do.

	Examples sourced from tatoeba.org