I am sure you, of all people, can compose a letter

我很确信众人当中
to a young man without any help from me.

唯独你给年轻男子写信用不着我帮忙
How much did it cost?

这个花了多少钱
Every penny I'd saved. Almost.

我的全部积蓄差不多
And is this the mystery lover?

这个就是你的秘密情人吗
I've been taking a correspondence course in typing and shorthand.

我参加了一项有关打字和速记的函授课程
That's what was in the envelopes.

信封里就是课件
- Are you any good? - Yes.

-你学得好吗 -当然
I am, actually.

说实话我学得很好
Her Ladyship wants the fawn skirt Lady Mary never wears.

夫人要玛丽小姐从来不穿的那件黄褐色短裙
The seamstress is going to

缝纫女工要把它
fit it to Lady Sybil, but I can't find it.

改成茜玻小姐的尺寸不过我没找到