un·der·laid /ˌʌndɚ/
underlay過去式和過去分詞
Un·der·laid a. Laid or placed underneath; also, having something laid or lying underneath.
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underlay
See underlie
[also: underlaid]
underlay
n : a pad placed under a carpet [syn: carpet pad, rug pad, underlayment]
v 1: raise or support (the level of printing) by inserting a
piece of paper or cardboard under the type; "underlay
the plate"
2: put (something) under or beneath; "They underlaid athe
shingles with roofing paper"
3: provide with a base, support, lining, or backing; "underlay
the boards with joists"
[also: underlaid]