Word · Frequency #24577
undulations
波动；起伏；波状弯曲
undulations is the plural of undulation.
wavelike motion; a gentle rising and falling in the manner of waves
- 1.
An instance or act of undulating.
波动的实例或动作。
- 2.
A wavy appearance or outline; waviness.
波浪状的外观或轮廓；起伏。
- 3.
A tremulous tone produced by a peculiar pressure of the finger on a string.
用手指在琴弦上施加特殊压力产生的颤音。
- 4.
A wavelike curve; a smooth and regular rise and fall.
波状曲线；平稳而有规律的起伏。
- 5.
A wavelike motion of the air; electromagnetic radiation.
空气的波动；电磁辐射。
波动的实例或动作。；波浪状的外观或轮廓；起伏。；用手指在琴弦上施加特殊压力产生的颤音。；波状曲线；平稳而有规律的起伏。；空气的波动；电磁辐射。
In use
The gentle undulation of the hills made the drive very relaxing.
She watched the undulation of the wheat in the wind.
The snake moved with a smooth undulation across the sand.
undulation of [sth]
用于描述地貌或物体的波状起伏。
The undulation of the plain made the road seem endless.
平原的起伏使道路显得一望无际。
undulation in [sth]
用于描述数据或状态的波动变化。
Doctors observed an undulation in the patient's blood pressure.
医生观察到患者血压的波动。
undulations of [sth]
使用复数形式，强调多次或连续的波动。
Connections
Collocations
- gentle undulation
- 平缓起伏
- From the hilltop, we saw the gentle undulation of the landscape.从山顶上，我们看到地形的平缓起伏。
- rhythmic undulation
- 有节奏的起伏
- The dancer's rhythmic undulation captivated the audience.舞者有节奏的起伏动作令观众着迷。
- undulation of the hills
- 丘陵的连绵起伏
- The undulation of the hills stretched to the horizon.丘陵的连绵起伏一直延伸到地平线。
- smooth undulation
- 平滑的波状起伏
- The roller coaster moved with a smooth undulation.过山车以平滑的波状起伏移动。
Synonyms
- wave
- 波浪；波状起伏 · 比 undulation 更常用、更具体，可指水的波浪或手势；undulation 更强调连续平滑的波状运动或形状。
Learner notes
Memory Tip
联想：undulation 的字母 u-n-d-u 像高低起伏的波浪线，u 是谷、n 是峰，记住“波动、起伏”。
Context & Register
语域：formal 常见场景：scientific writing、formal description、literary prose 在表示波浪状运动或起伏时，undulation 通常偏正式，多用于科技或文学描写；日常口语中较少用，更常说 wave 或 rise and fall。
Pronunciation & Spelling
以上六个词都与 undulation 押韵：重读音节均为 /ˈleɪʃən/，-ulation 的读音一致。注意拼写相近的词不一定同音：如 undulate /ˈʌndjʊleɪt/ 重音在前、结尾是 /leɪt/，和本词不押韵；lotion /ˈləʊʃən/ 虽也以 -tion 结尾，但元音不同，也不押韵。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.