第三人称单数： underlays
过去式： underlaid
过去分词： underlaid
现在分词： underlaying

And always choose the best underlay you can afford .

永远选择您可以接受的最好的衬垫物。

Waterproof and breathable roofing underlay ( similar to tyvek )

屋面防水和透气衬底（类似于特卫强）

Resilient floor coverings - specification for corkment underlay .

弹性地板覆盖物软木衬底规范。

Most of the economic reforms that underlay the growth during his presidency were the work of his predecessor .

在他总统任内促成经济成长的诸多改革措施，很多都奠基于前任总统卡多索的努力。

Everything always leads back to underlay .

每件事情都指向幕后。