A high proportion of five-year-olds have teeth in poor condition.

五岁儿童牙齿不健康的比例高。

A high proportion of the new arrivals are skilled professionals.

很大一部分新来的人们是技术熟练的专业人士。

The most striking feature of those statistics is the high proportion of suicides.

那些统计数据最显著的特征是高自杀率。

A high proportion of crime in any country is perpetrated by young males in their teens and twenties.

在任何国家，很大比例的罪行都是十几岁和二十几岁的青年男子所为。

Forest decline is still poorly understood but leads to the loss of a high proportion of a tree's needles or leaves.

人们对森林衰退还知之甚少，但森林衰退会导致树叶和针叶大面积脱落。