1. A 自然的，天然的　 of or being what exists or happens ordinarily in the world, especially not caused, made, or controlled by people
2. 表现自然的，不做作的　 not looking or sounding different form usual; not affected
3. 天生的，生来的　 belonging to sb from birth; not learned

　～ ability　本能
　～ beauty　自然美
　～ boundary　天然分界线
　～ character　天生的性格
　～ death　寿终正寝
　～ disasters　自然灾害
　～ gas　天然气
　～ gifts　天赋的才能
　～ history　博物学
　～ law　自然法则
　～ manner　自若的态度
　～ parents　亲生父母
　～ phenomena　自然现象
　～ product　天然产物
　～ response　必然反应
　～ result　自然结果
　～ rubber　天然橡胶
　～ sciences　自然科学
　～ scientist　自然科学家
　～ selection　自然选择
　～ son　私生子
　～ voice　自然的嗓音
　～ world　物质世界
　perfectly ～　十分自然
　quite ～　十分自然
　come ～ to sb　对某人来说轻而易举
　～ for　与（某人本性、作风）相符合的
　～ to　对…是自然的

　I'm beyond my depth when it comes to natural sciences.　谈到自然科学我就茫然。
　When the artificial flowers are contrasted with natural ones, you can hardly tell the difference.　当人造花和自然花对比时，你几乎不能辨出真假。
　This colour lends warmth to the room, as it gets no natural sunlight.　这种颜色给房间增添了暖和的感觉，因为这房间得不到自然阳光的照射。
　We often meet with a difficulty arising out of the peculiar natural conditions.　我们常常遇到由于特殊自然条件而产生的困难。
　They plan to build up a surplus of grain against times of natural calamities.　他们计划储备一些粮食以防发生自然灾害。
　Though we suffer from serious natural calamities, we are sure to overcome all difficulties.　我们虽然遭受到了严重的自然灾害，但我们一定能克服一切困难。
　They prepared to tap the nation's natural mineral wealth.　他们准备开发国家的自然矿产资源。
　In addition to natural rivers, the Chinese working class has dug many canals.　除了天然的河流之外，中国劳动人民还开挖了许多人工河流。
　When the synthetic fabric is contrasted with a natural one, the difference is very apparent.　要是把合成纺织品同天然纺织品对比一下，它们的差别就很明显了。
　Farmers supplement natural fertilizer with chemical fertilizer.　农民用化肥补充天然肥料。
　It is regarded as a natural behavior that a man helps the old go downstairs.　帮助老人下楼被认为是理所当然的行为。
　He spoke in quite a natural voice.　他说话声音很自然。
　I admit to a natural fear.　我承认生来胆小。
　Monkeys have natural ability.　猴子有敏捷灵活的本性。
　Cats have a natural aversion to water.　猫生来对水反感。
　He is a natural musician.　他是天生的音乐家。

　She is perfectly natural.　她极其自然。

　Children are usually more natural in their manner than adults.　孩子们的行动通常比成年人自然。
　Try to look natural for your photograph.　拍照时要自然一点。
　Fighting is natural to dogs.　狗生性爱斗。

　It's very natural to feel nervous when you go to a new school.　你去一所新学校读书时感到紧张不安是很正常的。
　It's natural to connect Australia with kangaroos.　把澳大利亚和袋鼠联想在一起是自然的。
　It is quite natural for you to succeed.　你的成功是很自然的。
　It's natural for you to favour your own profession.　你热爱自己的职业是很自然的。
　It's natural for children to grow away from their family.　孩子们长大以后独立于家庭是很自然的事。

　It is natural that a child should love its mother.　孩子爱母亲，这是常情。
　After reading a book, it is only natural that you don't understand it all. Never mind. Put it aside and start another one.　读完一本书，有不完全理解的地方是很自然的。没关系。把它搁在一边，再读另一本。

　Don't labour at your writing, try to make it seem easy and natural.　不要对你所写的东西过分雕琢，要把文章写得简明自然。

 ♣ natural, native
　参见native条。

　［同义词］ candid, common
　［反义词］ affected, pretended, unnatural
　［词源］　natur（生，自然）