undulate

• 形容某物呈波浪形起伏，或作平滑的波浪状运动。

Describes something that moves in a smooth, wavelike motion or has a wavy form.

1. Having a wavy margin and rippled surfaceC2formal

   Describes an object, especially a leaf or a surface, that has a wavy edge and a rippled or undulating texture.

   波状的

   • The undulate leaf of the oak tree is a key identifying feature.
   • The artist captured the undulate surface of the sand dunes in her painting.
   • The undulate margin of the fossil suggests it was a type of fern.

   同义词corrugatedrippledwavy

• 动词，用于描述平滑的波浪式运动或移动，常呈连续流动的方式。

A verb used to describe a smooth, wave-like motion or movement, often in a continuous or flowing manner.

1. Form ripplesC1formal

   To cause a liquid surface to move in small waves or ripples.

   使起涟漪

   • The breeze undulated the surface of the lake.
   • A stone thrown into the pond undulated the still water.
   • The wind undulated the tall grass in the field.

   同义词ripplerufflewave

2. Have a wavy shapeC1formal

   To have a form that consists of soft, rounded curves or waves.

   呈波浪形

   • The landscape undulated gently towards the horizon.
   • Her hair undulated in soft waves down her back.
   • The sand dunes undulated across the desert.

   同义词billowripplerollswellwave

3. Move with a wave-like motionC1formal

   To move in a smooth, wavy pattern, rising and falling.

   波动起伏

   • The snake undulated across the sandy path.
   • The dancers' bodies undulated to the rhythm of the music.
   • The flag undulated in the strong wind.

   同义词billowfluctuateheaveripplerollsurgeswaywave

4. Vary in soundC2formal

   To increase and decrease in volume or pitch, creating a wave-like effect.

   声音起伏

   • The singer's voice undulated beautifully through the aria.
   • The siren's wail undulated in the distance.
   • His speech undulated with emotion, rising and falling dramatically.

   同义词fluctuatemodulateoscillatewaver