Natural levels of steroid hormones vary widely between people.

类固醇激素的自然水平因人而异，且差别很大。

Gossypol was left at natural levels in the rest of the plant because it guards against insects and disease.

植株其他部分的棉籽酚保持在正常水平，因为它可以预防病虫害。

By 1960, you were twice the natural level. And '63-there was a test ban treaty, so '63 was the maximum.

到1960年，大气中的碳14含量为自然水平的两倍。但1963年出台了禁止试验条约，因此碳14含量在该年达到最大值。

Those who have higher natural levels of certain chemicals in their skin, particularly lactic acid, also seem to be more attractive.

那些皮肤天生含有较多特定化学物质的人 ——尤其是乳酸 —— 也特别吸引蚊子。

This bossy projection of earth above its natural level occupied the loftiest ground of the loneliest height that the heath contained.

这个从地球自然平面隆起的小丘，占据了荒原上最孤单的高山的最高点。

But beyond that, there's a lot of variation in natural levels

但除此之外，自然水平还有很多变化。

Measurements were taken before the participants were posed in the posture to get a kind of a natural or baseline level, and then measurements were taken after two minutes in the posture.

在参与者摆好姿势以获得一种自然或基线水平之前进行测量，然后在姿势两分钟后进行测量。

An analysis of a strand of Newton's hair in the 1970s found it contained mercury an element of interest to alchemists, hatters, and thermometer-makers but almost no one else at a concentration some forty times the natural level.

20世纪70年代，人们通过分析牛顿的一绺头发发现，里面含有汞这种元素，除了炼金术士、制帽商和温度计制造商以外，别人几乎不会感兴趣其浓度大约是常人的40倍。