Word: 一倍 (yíbèi)

中国人口大约是英国人口的二十一倍。

Zhōngguó rénkǒu dàyuē shì Yīngguó rénkǒu de èrshí yībèi.

The population of China is about twenty-one times that of the UK.

去年农业产值增加了一倍。

Qùnián nóngyè chǎnzhí zēngjiāle yíbèi.

Last year's agricultural output value doubled.

她跳槽后，年薪翻了一倍。

Tā tiàocáo hòu, niánxīn fānle yíbèi.

After she changed jobs, her annual salary doubled.

房租涨一倍，不像话！

Fángzū zhǎng yíbèi, búxiànghuà!

The rent doubled? That's outrageous!

泡了水，豆子膨胀了一倍。

Pàole shuǐ, dòuzi péngzhàngle yíbèi.

After soaking in water, the beans swelled to twice their size.

请把这张照片扩大一倍。

Qǐng bǎ zhè zhāng zhàopiān kuòdà yíbèi.

Please enlarge this photo to twice its size.