noun🔗Share起伏，波动。 An instance or act of undulating."The gentle undulations of the wheat field reminded me of waves on the ocean. "麦田里温柔的起伏，让我想起了海面上的波浪。naturephysicsgeographygeologyoceanChat with AIVocabulary GamePractice Reading
noun🔗Share起伏，波浪起伏。 A wavy appearance or outline; waviness."The road had slight undulations, making the bike ride a little bumpy. "这条路面有些微小的起伏，让骑自行车有点颠簸。appearancenatureChat with AIVocabulary GamePractice Reading
noun🔗Share颤音，震音. A tremulous tone produced by a peculiar pressure of the finger on a string."The guitarist added subtle undulations to the melody by gently rocking his finger on the fret. "吉他手通过手指在琴桁上轻轻摇动，为旋律增添了细微的颤音。musicsoundsensationChat with AIVocabulary GamePractice Reading
noun🔗Share起伏，波浪起伏。 A wavelike curve; a smooth and regular rise and fall."The car traveled smoothly over the undulations of the newly paved road. "汽车平稳地行驶在新铺好的路面上，路面有些微小的起伏。naturegeographyphysicsappearanceChat with AIVocabulary GamePractice Reading
noun🔗Share波动，起伏. A wavelike motion of the air; electromagnetic radiation."The heat from the desert road caused shimmering undulations in the air, making it difficult to see distant objects clearly. "来自沙漠公路的热气让空气中出现闪烁的波动，使得很难看清远处的物体。physicsenergysoundenvironmentChat with AIVocabulary GamePractice Reading
noun🔗Share心悸，起伏感 A feeling as if of an undulatory motion about the heart."After the doctor listened to my heart, he said he detected slight undulations, likely due to stress. "医生听了我的心脏后，说他察觉到轻微的心悸，感觉像是有节奏的起伏，可能是压力造成的。sensationphysiologybodyChat with AIVocabulary GamePractice Reading
noun🔗Share波动感，起伏感 The distinctive motion of the matter within an abscess on being pressed when it is ripe for opening."The doctor gently pressed on the ripe abscess, noting the distinct undulations of the pus beneath the skin, indicating it was ready to be lanced. "医生轻轻按压成熟的脓肿，注意到皮下脓液明显的波动感，表明可以切开引流了。medicinebodyphysiologydiseaseconditionanatomyChat with AIVocabulary GamePractice Reading
