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

她是一个一岁的泰迪熊仓鼠。

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They have a one-year-old son.

现在他们有了个一岁大的儿子。

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Soon she attracted the curiosity of the one-year-old baby ape she adopted.

这很快便引起了她收养的一岁小猩猩的好奇。

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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

Michael Biggs, 26, was joined by his girlfriend Veronica Carvalho and one-year-old daughter Ingrid last week.

BBC: Plans to expel Biggs's son denied

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

BBC: Pills and bottle

Kate Harris's one-year-old Peruvian striped owl flew into nearby Harlow Town Park when "something spooked it".

BBC: Wicket the owl with owner Kate Harris