Ll: so, if I text L-O-L, my friend will know that I find something so funny it makes me want to laugh out loud?

没错。l - o - l在短信里，就代表laugh out loud，意思是看到了非常好笑的事情。

youdao

Under the ship, he printed in big red letters: C-O-N-G-R-A-T-U-L-A-T-I-O-N-S!

在船下面，他用红色大字写着：C-O-N-G-R-A-T-U-L-A-T-I-O-N-S！

youdao

One day, while I was playing with my new doll, Miss Sullivan put my big Rag Doll into my lap also, spelled "d-o-l-l" and tried to make me understand that "d-o-l-l" applied to both.

有一天我正在玩一个新娃娃，沙利文小姐把我的大布娃娃也放在我腿上，然后写了“d - o - l - l”这几个字母，她是想让我知道“d - o - l - l”既可以指新娃娃，也可以指旧娃娃。

youdao

As she felt the doll with one hand I slowly formed the letters, d-o-l-l with my fingers in her other hand.

VOA: special.2009.11.08

lstd So this is pretty-- similarly might we say this dash L STD for standard, for Standard I/O.

同样也可以是,即标准输入输出库。

哈佛公开课 - 计算机科学课程节选

It's like they spell colour, c-o-l-o-r, we spell it c-o-l-o-u-r,

这就像他们拼写颜色这个单词，c-o-l-o-r，而我们拼写成c-o-l-o-u-r，

美式英语和英式英语 - SpeakingMax英语口语达人

They spelt it P O double L Y in their press release.

BBC: Rocky times

In the second half, we brought L.O. in and we went small, which opened the court up.

NPR: Thunder Holds Off Clippers To Win 108-104

The book, by Times reporter Timothy L. O'Brien, hit store shelves October 26.

FORBES: Follow-Through