match垫: put sth. under sth. else to ...平整: level垫平整的基底: equalizing bed垫平整的基底 管沟垫层: equalizingbed垫平: level up 垫平地面 level up [down] the ground; 建房前要先把地基垫平。 the site must be levelled before it is built upon下载手机词典可随时随地查词查翻译