常見例句Crossing the great Atrato swamp, where the track became a causeway over slimy logs and then a mat of floating grass, the bike would sometimes sink into nothingness. 在阿特拉托河沼澤，道路上滿是粘粘的木棍和浮草，自行車有時(shí)會(huì)一下子走空。 返回 Atrato