natural
[ˈnætʃrəl]
adj.
自然的;
物质的;
天生的;
不做作的;
n.
自然的事情;
（生来的）白痴;
[乐]（风琴等的）白键;
例句:
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Sucking is a very natural activity for a baby.
来自BBC
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Natural Forces is a treat from start to finish.
来自BBC
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The ball is made of rattan — a natural fibre.
这个球是由一种天然纤维——省藤制成的。
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Vintage ports must be decanted to remove natural sediments.
上等的波尔图葡萄酒必须倒入其他容器中以滤除自然沉淀物。
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Mainline feminism was arguing for the inherent beauty of the natural woman.
主流女权主义思想倡导女性天生的自然美。
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It just seemed like the natural step for us.
来自BBC
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I admit to a natural fear.
我承认生来胆小。
来自《权威词典》
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I'm beyond my depth when it comes to natural sciences.
谈到自然科学我就茫然。
来自《权威词典》
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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。
来自《权威词典》