起伏

You can either use a constant flow or an ebb and flow system.

您可以使用一个不断流动或起伏和流动制度。

I learned the ebb and flow of city life from the perspective of the pavement.

我学习到由人行道上观察这个城市的盛衰起伏。

The Rhine flowed on, swirling and eddying, at six or seven miles an hour

莱茵河不断以每小时六、七哩的速度，滔滔滚流，波涛起伏。

Various [BO6] units exhibit remarkable differece in stability, ion size and ion electrovalence. Therefore, the growth interfaces with electric charges would make a choice among those [BO6]growth units, resulting in the short range of fluctuation in composition and structure at the stage of crystal growth and preparing for the aubsequent formation of ordered domains and other chemical defect clusters.

在基元组装过程中，各种[BO6]八面体基元在稳定性、尺寸大小与电价上的分异致使生长界面对基元有一定的选择性，从而造成了晶体生长时成分与结构的短程起伏，并为有序畴及其它化学缺陷团簇的形成提供了条件。

The west side of every wood and rising ground gleamed like a boundary of Elysium, and the sun on our backs seemed like a gentle herdsman driving us home at evening.

每片树林的西缘，起伏的土地闪闪发光得如同处在极乐世界里，阳光照射在我们的背上宛如一位温和的牧羊人傍晚赶着我们走在回家的路上。

The inner surface of endodermis in maize and wheat were undulate and there were"pore-like"structure in it, size 70-90nm, frequency 2, 000 per square micron.

玉米内皮层细胞内切向壁的内表面起伏不平，并具有70-90纳米的"孔状"质外体结构，其频率约为2，000个/平方微米。

Floating population formed very unsteady elements of the society.To some extent,its enormousness gave rise to turbulence of Chinese modern society.

流民是一种极不稳定的社会因素，在一定程度上，他们的大量存在造成了中国近代社会的动荡起伏。

Bright Star by John Keats Bright star, would I were stedfast as thou art--- Not in lone splendour hung aloft the night And Watching, with eternal lids apart, Like nature's patient, sleepless Eremite, The moving waters at their priestlike task Of pure ablution round earth's human shores, Or gazing on the new soft-fallen mask Of snow upon the mountains and the moors--- No-yet still stedfast, still unchangeable, Pillow'd upon my fair love's ripening breast, To feel for ever in a sweet unrest, Still, still to hear her tender-taken breath, And so live ever---or else swoon to death.

灿亮的星灿亮的星啊，但愿我能如你坚定---但并非孤独地在夜空闪烁高悬，睁着一双永不合拢的眼睛，犹如苦修的隐士彻夜无眠，凝视海水冲洗尘世的崖岸，好似牧师行施净体的沐浴，或正俯瞰下界的荒原与群山被遮盖在轻轻飘落的雪罩里---并非这样---却永远鉴定如故，枕卧在我美丽的爱人的酥胸，永远能感到它的轻轻的起伏，永远清醒，在甜蜜的不安中，永远、永远听着她轻柔的呼吸，永远这样生活---或昏厥而死去。

Birght star —灿烂的星 Bright star, would I were stedfast as thou art--- Not in lone splendour hung aloft the night And Watching, with eternal lids apart, Like nature's patient, sleepless Eremite, The moving waters at their priestlike task Of pure ablution round earth's human shores, Or gazing on the new soft-fallen mask Of snow upon the mountains and the moors--- No-yet still stedfast, still unchangeable, Pillow'd upon my fair love's ripening breast, To feel for ever in a sweet unrest, Still, still to hear her tender-taken breath, And so live ever---or else swoon to death.

灿亮的星啊，但愿我能如你坚定---但并非孤独地在夜空闪烁高悬，睁着一双永不合拢的眼睛，犹如苦修的隐士彻夜无眠，凝视海水冲洗尘世的崖岸，好似牧师行施净体的沐浴，或正俯瞰下界的荒原与群山被遮盖在轻轻飘落的雪罩里---并非这样---却永远鉴定如故，枕卧在我美丽的爱人的酥胸，永远能感到它的轻轻的起伏，永远清醒，在甜蜜的不安中，永远、永远听着她轻柔的呼吸，永远这样生活---或昏厥而死去。

The mean of measurement error of wide band sound level trends to 3 dB for single hydrophone and to 0 dB for vertical array measurement.

海上实验测量单频信号声源级的结果与数值计算的起伏一致，海试中垂直阵获得较高的空间增益。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。