noun🔗Share波动，起伏。 An instance or act of undulating."The gentle undulation of the wheat field in the breeze was mesmerizing. "微风吹拂下，麦田呈现出温柔的波浪状起伏，令人着迷。naturephysicsgeologyChat with AIVocabulary GamePractice Reading
noun🔗Share波动，起伏。 A wavy appearance or outline; waviness."The undulation of the wheat field in the breeze was mesmerizing. "微风吹拂下，麦田呈现出波浪般的起伏，令人着迷。appearancenaturegeologyphysicsChat with AIVocabulary GamePractice Reading
noun🔗Share颤音, 波音 A tremulous tone produced by a peculiar pressure of the finger on a string."The guitarist added a subtle undulation to the final note, giving it a beautiful, vibrating quality. "吉他手在最后一个音符上加了一个细微的颤音，使它带有一种优美、颤抖的音质。musicsoundsensationstyleChat with AIVocabulary GamePractice Reading
noun🔗Share起伏，波浪。 A wavelike curve; a smooth and regular rise and fall."The field of wheat showed a beautiful undulation as the wind blew across it. "微风吹过麦田，麦浪翻滚，呈现出美丽的起伏。naturegeographyphysicsappearanceChat with AIVocabulary GamePractice Reading
noun🔗Share波动，起伏。 A wavelike motion of the air; electromagnetic radiation."The heat rising from the asphalt created a visible undulation in the air, making the distant cars appear to shimmer. "从柏油路面升腾的热浪在空气中形成了可见的波动，使得远处的汽车看起来都在闪烁。physicsenergynatureChat with AIVocabulary GamePractice Reading
noun🔗Share心悸，起伏感 A feeling as if of an undulatory motion about the heart."After the unexpected news, she felt a strange undulation in her chest, like a gentle wave washing over her heart. "听到那个意外的消息后，她感到胸口一阵奇怪的心悸，像是有一阵轻柔的波浪在她的心房里起伏。physiologysensationmedicinebodyChat with AIVocabulary GamePractice Reading
noun🔗Share波动感，液体震颤。 The distinctive motion of the matter within an abscess on being pressed when it is ripe for opening.""The doctor gently pressed the swollen area, observing the subtle undulation within the abscess to determine if it was ready to be drained." "医生轻轻按压肿胀的部位，观察脓肿内部细微的波动感，以判断是否可以引流。medicinebodysensationphysiologyChat with AIVocabulary GamePractice Reading
