)underlay
铺在...下面, 垫起1. a pad placed under a carpet
同义词：carpet pad, rug pad, underlayment
动词underlay:
1. raise or support (the level of printing) by inserting a piece of paper or cardboard under the type
2. put (something) under or beneath
3. provide with a base, support, lining, or backing
动词underlie:
1. be or form the base for
同义词：underlie
2. lie underneath
同义词：underlie
