Unless he can hide his 51, he can't make himself a human.

除非他能隐藏自己的51岁，否则他无法把自己变成人类。

youdao

Officials there said on Tuesday that 130 cm (51 inches) of rain had fallen in the region since Friday.

当地官员周二表示，自上周五以来，该地区降雨量已达130厘米（51英寸）。

youdao

He needs 51 percent to be reelected.

他需要51%的选票以再度当选。

《柯林斯英汉双解大词典》

He was 51 years old.

VOA: special.2009.01.29

Well, with all that said by preparation, let me show you some more poems, beginning with Thomas Hardy, on page 51.

我做了很多准备，我来给你们看更多的诗篇，从托马斯·哈迪开始，在51页。

耶鲁公开课 - 现代诗歌课程节选

If you or I buy it, it costs $51 per dose, you need three doses to be effective.

如果你或者我购买它,每支将花费五十一美元,你需要购买三支才会起效

耶鲁公开课 - 生物医学工程探索课程节选