underlay

• 名词，指铺在地毯下面的垫层或材料，用于提供缓冲、隔音、隔热或支撑。也可泛指置于其他材料之下作为基础或衬垫的层。

A noun referring to a pad or layer of material placed underneath a carpet to provide cushioning, insulation, or support.

1. Carpet paddingB1formal

   A layer of material placed underneath a carpet to provide cushioning, insulation, and support.

   地毯垫

   • The new underlay made the carpet feel much softer underfoot.
   • We installed a thick underlay to reduce noise from the floor below.
   • The underlay helps to extend the life of the carpet.

   同义词carpet padcushionpaddingunderfeltunderlayment

• 动词，指把某物放在另一物之下或下方，通常用于支撑或作为基础；也指构成某事物的基础或根据。

A verb meaning to place something under or beneath something else, often for support or foundation.

1. Raise or support printingC2formaltechnical

   To raise or support the level of printing by inserting a piece of paper or cardboard under the type.

   垫版

   • The printer underlaid the type to ensure even pressure.
   • He underlaid the block with a thin sheet of paper.
   • The technician underlaid the plate to correct the impression.

2. Put something beneathC1formal

   To place something under or beneath another object.

   垫在下面

   • She underlaid the carpet with a soft foam pad.
   • They underlaid the tiles with a waterproof membrane.
   • The builder underlaid the foundation with gravel.

   同义词bolsterbuttresspadsupportunderpin

   反义词overlaysuperpose

3. Provide with a base or backingC1formaltechnical

   To provide something with a base, support, lining, or backing.

   提供基底

   • The artist underlaid the canvas with a layer of gesso.
   • They underlaid the road with a strong asphalt base.
   • The craftsman underlaid the jewelry box with velvet.

   同义词backbaselinepadsupportunderpin

• 动词，表示某事物是另一事物的基础、根据或隐藏的原因。

A verb used to indicate being the foundation, basis, or hidden cause of something.

不规则动词

1. Be the foundation ofC1formal

   To be the basis or foundation for something, often an idea, theory, or system.

   构成基础

   • Several key principles underlie the theory of evolution.
   • Trust and communication underlie a healthy relationship.
   • Economic factors underlie many political decisions.

   同义词basegroundsupportunderpin

2. Lie beneathC1formal

   To be located or situated beneath something else.

   位于下方

   • A layer of rock underlies the topsoil in this region.
   • The bedrock underlies the entire mountain range.
   • Ancient ruins underlie the modern city.