I found his letter long after he had left.

他走了好久我才发现他的信。

youdao

I found the letter long after he had gone away.

他走后很久我才发现了那封信。

youdao

We found the letter long after he had gone away.

他出去很久以后，我们才发现那封信。

youdao

It was a long and scholarly letter.

VOA: special.2010.09.18

He said, my apologies for not answering your letter but my health is poor and--but it was a long letter.

他写道,非常抱歉没能及时回复,我身体欠佳,这是一封很长的信

耶鲁公开课 - 金融市场课程节选

So if your word game doesn't work when the words are 12 letters long, instead of continuing to debug 12 letter hands see if you can make it fail on a three letter hand.

因此如果你的单词游戏当输入单词,有12个字母的时候没法运行了，看看输入三个字母的单词它,能不能正常运行吧。

麻省理工公开课 - 计算机科学及编程导论课程节选

Last summer her team hit pay dirt: They found a tiny alteration of just four chemical beads, or "letters, " in the 35, 000-letter-long Flap gene.

FORBES: Attacking Heart Attacks

The letter was long enough for contrition, but still was short.

NEWYORKER: Bravado

Kennan put much of this in a long letter to Bohlen in the winter of 1945.

NEWYORKER: Getting Real