She's a one-year-old teddy bear hamster.

她是一个一岁的泰迪熊仓鼠。

youdao

In China, they say that babies are one year old when they are born.

在中国，人们说婴儿出生时是一岁。

youdao

NEXT week Kosovo will be one year old.

下个星期科索沃就将迎来诞生一周年。

youdao

Helen was their first child. Until she was a year-and-one-half old, Helen Keller was just like any other child.

VOA: special.2009.11.08

Any of you who have access to a four- or five-year-old, a sibling or something-- Do not take one without permission, but if you have access to a four- or five-year-old you can do this yourself.

如果你身边有四五岁大的孩子,兄弟姐妹什么的,一定要先得到同意再去试验,如果你身边有四五岁大的孩子,你可以自己去试试

耶鲁公开课 - 心理学导论课程节选

You put a child on one side of the mountains and you ask him to draw it, and a four- or five-year-old can do it easily, but then you ask him to draw it as it would appear from the other side and children find this extraordinarily difficult.

你让孩子在模型的一边,要求他把自己看到的三山模型画出来,四五岁的儿童便能够轻易做到,但是,如果你要求儿童画出,从模型另一边看过去的样子,儿童就会觉得非常困难

耶鲁公开课 - 心理学导论课程节选

The 75-year-old woman from Skegness admitted leaving quinine tablets within reach of the one-year-old girl.

BBC: Pills and bottle

And on April 23rd, the Dow set another high for the then one-year old bull market.

FORBES: Some Investors Concerned We Could Be Entering Another Soft Patch

Isobel's mother and 37-year-old stepfather rescued their one-year-old daughter, but could not save her.

BBC: Isobel Dobson death: Stepfather arrested over fire