1
undulate (no object)
不及物用法，表示主体自身波动。
The wheat field undulated in the breeze.
麦田在微风中起伏。
起伏；波动
undulated — past of undulate
先理解核心含义，再看它在真实句子里的用法。
起伏；波动
to move or appear in wavelike motions
The wheat field undulated in the breeze.
麦田在微风中起伏。
使作波浪状运动；使起伏。
To cause to move in a wavelike motion.
使似波浪；使呈波状。
To cause to resemble a wave.
作波浪状运动；起伏。
To move in wavelike motions.
呈波浪状；现出波状。
To appear wavelike.
undulate
Base
原形
undulates
3rd person
第三人称单数
undulating
-ing
现在分词
undulated
Past
过去式
undulated
Past participle
过去分词
The snake undulates smoothly.
蛇平滑地蜿蜒前进。
The wheat fields undulated in the wind.
麦田在风中起伏。
The dancer's body is undulating to the music.
舞者的身体随着音乐起伏。
规则动词，加-ed和-ing。
The wheat field undulated gently in the breeze.
麦田在微风中轻轻起伏。
The dancer's arms undulated like waves.
舞者的手臂像波浪一样摆动。
As the boat moved forward, the rope began to undulate.
船向前行驶时，绳子开始波动。
不及物用法，表示主体自身波动。
The wheat field undulated in the breeze.
麦田在微风中起伏。
及物用法，表示使某物起伏或波动。
The magician undulated the silk scarf with a flick of his wrist.
魔术师手腕一抖，使丝巾呈波浪形飘动。
Not this
We saw the undulate of the hills.
Use this
We saw the undulation of the hills.
“波动” 是动词，名词形式应为 “undulation”。
Not this
The stock market undulates daily.
Use this
The stock market fluctuates daily.
“undulate” 指物理上的波动起伏，抽象变化用 “fluctuate”。
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可用于及物和不及物用法，常描述波浪或起伏运动。
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
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, WORDNET.