短語(yǔ)詞組短語(yǔ)flat envelope ground 平坦地flat just ground 高山flat -ground 平磨with sole flat on ground 以全腳掌著地THREE -EDGED FLAT-GROUND SCRAPER 三角實(shí)心刮刀;三角學(xué)實(shí)心刮刀flat degree of ground 地面平整度Laser flat ground machine 激光平地機(jī)flat ground surface 水平地表面flat on the ground 平攤在地上 返回 flat ground