一年有十二个月。

Twelve months in a year.

十二个月构成了一年。

Twelve months constitute a year.

他在国外工作了十二个月。

He worked abroad for twelve months.

我们已经在这里住了十二个月。

We have lived here for twelve months.

他们的宝宝已经十二个月大了。

Their baby is already twelve months old.

这本书的出版需要十二个月的时间。

It took twelve months to publish this book.

我们计划在十二个月内完成这个项目。

We plan to complete this project in twelve months.

十二个月，相当长也相当短。

Twelve months, a long and very short.

十二个月的心理健康诊断当中。

Twelve months between the diagnosis of mental health.

埃德娜: 平均大约要九至十二个月的时间.

Edna: The average would be about nine to twelve months.