亲笔的英文：
in ones own handwriting

参考例句：

At last it burst on him in a letter from Lucy herself.
最后，露茜在一封亲笔信中，突然向他亮牌。

He also embossed the name for the Jiujiang Station.
他还亲笔为九江站题写了站名。

A mere three lines of elegant handwriting, unmistakably Huei-fang's
寥寥的三行字，非常秀媚的《灵飞经》体，确是四小姐的亲笔。

Last spring, I spent a few hours looking at the autograph manuscript of "Dorian Gray," at the Morgan library.
去年春天，在摩根图书馆我花了几个小时寻找《道林格雷》的亲笔手稿。

ones是什么意思：
n. one的复数形式；（用于代替名词词组，表示刚提到过的事物）

One, Taipei, one way.
台北单程票一张。

This one is not a spoof.
这个就不是开玩笑了。

One and one make(s) two.
一加一等于二。

own是什么意思：
adj. 自己的；为自己的
v. 拥有，承认

John was excited by the prospect of owning his own boat.
约翰因将拥有自己的船而感到兴奋。

On one 's own account
为自己计算，为自己利益，独立帐目

Everything he owned was sequestered.
他的所有财产都被扣押了。

handwriting是什么意思：
n. 书法；书写；笔迹

I must erase this handwriting.
我们得消除这些笔迹。

The address was in Anna's handwriting.
地址是安娜的笔迹。

Look at his shocking handwriting!
瞧他糟糕的书法！