Her feeling for John wax and wane.

她对约翰的感情越来越淡。

The protracted episode illustrates how public health scares wax and wane.

这一迟到的插曲表明，公众对健康的担忧一时高涨，一时低落。

The [protracted] episode illustrates how public health scares wax and wane.

这一迟到的插曲表明，公众对健康的担忧一时高涨，一时低落。

And men, nations, doctrines, what you will, wax and wane by analogous ACTS of selection.

以及人，国家，教条，你将的，通过选择的类似行为的盈亏。

Beneath the heavenly sphere this solar cycle is mirrored in the lunar cycle of wax and wane and tidal ebb and flood.

在天球里，太阳的活动周期也反映在月亮的盈亏圆缺和相对应的潮起潮落的月运周期。

Swear not by the moon, it is constantly changing, every month has wax and wane; if you swear with it, your love will be like it is.

不要指着月亮发誓，它是变化无常的，每个月都有盈亏圆缺；你如果指着它发誓，或许你的爱情也会像它一样无常。

While the ancient Europeans set the beginning of a year by measuring solar movement, my ancestors did so by observing the lunar wax and wane.

古代欧洲人精算时计，以太阳运动的轨迹确定一年起始之日；

By measuring changes in the light reflected from the clouds, they found that the clouds appear to wax and wane in prevalence over a 27-day cycle.

通过测量夜光云反射的光的变化，他们发现夜光云从盛到衰的周期大约为27天。

Doctors don't know what causes chronic fatigue syndrome, characterized by debilitating fatigue and chronic pain with symptoms that can wax and wane over time.

医生们不知道慢性疲劳综合症的致病原因。该病的特征是使人虚弱无力的疲倦、慢性疼痛，症状的轻重则可能随时间变化。

Certainly, some of the facts at hand are valid; for example, the Maya did have a Long Count calendar, pole-shift theory does exist, and solar activity does wax and wane.

当然，有些事实证据是有效的，比如玛雅人的确有一个长记历的历法，地磁反转理论也的确存在，太阳活动的确在减弱等等。

As kids move from one academic track to another, join or leave sports teams, or take up new extracurricular hobbies, the opportunities to interact with friends wax and wane.

当孩子们从一个学习阶段步入另一个学习阶段，参加或离开体育队，或是有了新的课外的兴趣爱好，那么，和朋友在一起互动的机会就会此消彼长。

The moon wax till it become full, and then wane.

月亮渐渐变圆直至满盈，然后再变亏缺。

That may be because film is so much younger than the other great art forms, which have had centuries to wane, wax, mutate and cross - pollinate.

也许是因为电影较之其它艺术形式要年轻得多，有些艺术创作经历过跨世纪的兴衰、异变以及融合。