The state of Liberia was formed a century and a half ago by freed slaves from the United States.

利比里亚国家是一个半世纪前由来自美国的获得自由的奴隶建立的。

《柯林斯英汉双解大词典》

About a week and a half ago, on October 7, my three friends and I came to eat at this restaurant as our own homecoming celebration.

大约一周半前，也就是10月7日，我和我的三个朋友在这家餐厅吃饭，作为我们自己的返乡庆典。

youdao

That was a year and a half ago.

一年半过去了。

youdao

About a year and a half ago, his goat Millie was giving him a hard time.

VOA: special.2010.07.20

The same results also showed up about a year and a half ago.

一年半前也得到同样的结果。

耶鲁公开课 - 心理学导论课程节选

So I moved here about a year... a year and a half ago.

我是大概一年前……一年半前搬到这里的。

来西部的原因 - SpeakingMax英语口语达人

I'm just wondering: Why wasn't this being done a week, a week and a half ago?

NPR: Admiral Coordinating New Orleans Recovery

He graduated from Simpson College about a year and a half ago with honors.

WHITEHOUSE: Discussing the Economy in Des Moines

The school went meatless three days a week about a year and a half ago.

CNN: New York school goes all-vegetarian