The leaf area of two different grades branch is mainly proportion of total leaf area in different age period.

在顶坛花椒的不同年龄阶段，约两种左右枝级的叶片面积是植株总叶面积的主要组成部分。

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A second experiment zoomed in on the age period of two to three years, to see how colour preferences changed during this crucial year.

第二个实验重点关注二到三岁这个年龄段，看在这个关键的一年颜色偏好是怎么变化的。

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The period from 3000 to 1000 B.C.E., when the use of bronze became widespread, is normally referred to as the Bronze Age.

在公元前3000年到公元前1000年，即青铜器被广泛使用的这一时期，通常被称为青铜时代。

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Poets called it the Golden Age. A golden age now describes a historical period of great artistic,scientific or economic progress.

VOA: special.2010.06.06

Some of the sites that are said to be destroyed by Joshua and the Israelites weren't even occupied in this period, ; the late Bronze Age, beginning of the Iron Age; the Iron Age begins around 1200.

据说一些遗址已被破坏,被约书亚，以色列在那时还未被攻占，在铜器时代晚期，铁器时代的初始;,接触器时代自1200年左右开始。

耶鲁公开课 - 旧约导论课程节选

It refers to that period that Plato says in the letter looked like "a golden age, " when many things seemed possible."

也就是柏拉图在书信中所指,“事物充满无限可能的，黄金时期“

耶鲁公开课 - 政治哲学导论课程节选

Experts say it is unusual for so many organic objects to survive for this length of time in a grave from the Bronze Age period.

BBC: 'Amazing' bronze age burial site treasures on Dartmoor

He accepted that dating results had put the road in the Iron Age period but said he just did not believe structured roads would have happened in that period.

BBC: Iron Age road found in Shropshire by archaeologists

The first four questions in the quiz ask about age: your current age, the age of your first menstrual period, and your age at the time your first child was born.

NPR: Online Calculator Estimates Breast Cancer Risk