hollow

• 形容物体内部有空洞或空隙；也形容声音低沉、有回响。

Describes something that has an empty space inside, or a sound that is deep and echoing.

1. Empty insideA2formal

   Having a space or cavity inside; not solid.

   空心的

   • The tree trunk was hollow and provided shelter for animals.
   • She found a hollow rock near the river.
   • The chocolate bunny is hollow inside.

   同义词cavernousconcaveemptygapingsunkenunfilledvacantvoid

   反义词filledfullsolid

2. Without meaning or depthB2formal

   Lacking real significance, substance, or sincerity.

   空洞的

   • His apology felt hollow and insincere.
   • The politician's promises were hollow and empty.
   • She gave a hollow laugh, not finding the joke funny.

   同义词emptyfalseinsinceremeaninglesspointlessshallowsuperficialvain

   反义词deepgenuinemeaningfulprofoundsignificantsinceresolidsubstantial

3. Sunken or concaveB1formal

   Describing a part of the body that is sunken or depressed.

   凹陷的

   • He had hollow cheeks from lack of sleep.
   • Her eyes looked hollow after crying all night.
   • The old man's face was gaunt and hollow.

   同义词cavernousconcavedeep-setdepressedsunken

   反义词bulgingconvexprotuberant

• 指固体物体内部或表面的空腔、空洞或凹陷。

A noun referring to a space, cavity, or depression within a solid object or surface.

1. Empty space insideB1formal

   A cavity or empty space within a solid object.

   空洞

   • The tree trunk had a large hollow inside.
   • The rabbit hid in a hollow under the ground.
   • The hollow in the rock was filled with rainwater.

   同义词cavityholepitpocketrecessvoid

2. Depression in the groundB2formal

   A small valley or basin-shaped depression in the earth's surface.

   洼地

   • The village was nestled in a hollow between two hills.
   • They camped in a sheltered hollow near the river.
   • The hollow was covered with thick moss and ferns.

   同义词basindaledelldepressiondingleglenswalevalevalley

• 动词，指在某物内部挖出洞或空间，或使某物变为中空、形成空腔。

A verb used to indicate the act of making a hole or empty space inside something, or to form a cavity.

1. Make empty insideB1formal

   To remove the inner part of something, creating an empty space.

   挖空

   • He hollowed out the log to make a canoe.
   • The sculptor hollowed the stone to create a bowl.
   • She hollowed the pumpkin for a Halloween lantern.

   同义词carvecleardigemptyexcavategougehollow outscoop

   反义词fillpackstuff

2. Form a cavityB2formal

   To form a hole or cavity in a surface.

   挖空

   • The river hollowed the rock over centuries.
   • The dentist hollowed the tooth before filling it.
   • Wind and rain hollowed the cliff face.

   同义词carvecut outdentdigexcavategougepitrecessscoop

   反义词fillsolidify

短语动词变体hollow out