The qualities of different wools vary greatly.

It is natural for ducks to swim.

鸭子会游泳是天生的.

Some practice in the deft use of words may well be ancillaryto the study of natural science.

熟练使用文字的练习对于自然科学的研究也是有帮助的.

Poor food arrests the natural growth of children.

粗劣的食物妨碍儿童的发育.

They have compiled a collection of Elementary Readings on the Natural Scieces to help young people in their studies.

为了便于青少年学习,他们编了一套《自然科学小丛书》.

She sings with a natural voice.

她唱歌的嗓音很自然.

There is nothing more natural than a child's belief in his parents.

没有任何事情比孩子对他父母的信赖更为自然.

Leaving some fields fallow provided a natural check on insect populations.

让一些土地休耕是自然控制昆虫数量的办法.

Australia is a country rich in natural resources.

澳大利亚是个自然资源很丰富的国家.

It is regarded as a natural behavior that a man helps the old down stairs.

帮助老人下楼被认为是理所当然的行为.

Our country has sufficiency of natural resources.

我国有足够的自然资源.

It is natural that he should say so.

他那样说是理所当然的.

He is a natural musician.

他是天生的音乐家.

It's natural for children to grow away from their family.

孩子们长大以后离开家庭是很自然的事.

Iceland is full of hot springs, beautifully coloured rocks, and other natural wonders.

冰岛遍布温泉 、 美丽的五彩岩石和其他自然奇观.

Her natural creativity and artistic talent make her home a real showstopper.

她天生的创造力和艺术天赋让她的家不同凡响，令人叹服。

A prisoner collapsed and died yesterday, apparently from natural causes.

一名囚犯昨天突然倒下死了，看上去像是正常死亡。

Choose shades which tone in with your natural colouring.

选择与你本身的肤色相衬的颜色。

He said that the decision flew in the face of natural justice.

他说这个决定有悖天理。

Pregnancy is a natural part of womanhood.

女人怀孕是天经地义的事。

Today, oil and natural gas have replaced coal and wood in most areas.

如今在大部分地区，燃油和天然气已经取代了煤炭和木头。