crawler tractorcreeper traveler履带式: crawler-type牵引车: drafter; tractor; truck-trac ...履带式牵引机: caterpillar tractor履带式牵引装置: caterpillar haul off unit鞍式牵引车: saddle tractor; truck tractor; trucktractor下载手机词典可随时随地查词查翻译