Wheels left grooves in a muddy dirt road如题

Wheels left grooves in a muddy dirt road如题 wheels是什么意思 Wheels是什么意思? （翻译）wheels within wheels what's that supposed to mean?what's that supposed to mean? 请问这里 what's 是what is suppose 是动词,这里是被动语态吗?2.具体supposed在句子中怎么翻译?另一个问题：Wheels leave grooves in dirt （roads）.roads 为 the grooves line up with the crossbeam. IT has two wheels . Watching The Wheels 歌词 on wheels是什么意思 hell on wheels wheels什么意思 The wheels on the Watching The Wheels 歌词 wheels翻译成中文! party on wheels是什么意思 Abrasive Wheels是什么意思 wheels什么意思 利润最大化 第一题.where x denotes the number of frames and y denotes the number of wheels.find the maximum profit assuming that the firm does not want any spare frames or wheels left over at the end of the production run其中X表示帧的数