n.不定期運輸；不定航線運輸
動詞tramp的現(xiàn)在分詞形式.
We went for a tramp over the hill. 我們徒步翻過了山頭
They came tramping through the kitchen leaving dirty footmarks. 他們重踏著腳步穿過廚房走來，留下了骯臟的腳印。
