?垫砂起道
... under cutting of track, lowering of track 落道 measured shovel packing 垫砂起道 gage correction, gaging of track 改道 ...
英汉双解词典包含3185865条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。