The convector pits are covered with concrete grids that are prefabricated building pigsties.
供热器并被通常用在猪圈上的混凝土格栅覆盖。
英文例句大全为您提供pigsties英文例句大全,pigsties英文造句,关于pigsties的英语句子,单词pigsties怎么造句,pigsties英文例句大全有哪些,哪些英语句子是关于pigsties,英语单词pigsties的句子,单词pigsties如何造句,pigsties怎么造句等。