- Appalachian阿巴拉契亚造山运动 the appalachian mountains 阿巴拉契亚山脉
appalachian trail 阿巴拉契亚山道；阿帕拉契山径
- trailtrails
on the trail 追踪，寻找；在山径上
audit trail 审查跟踪，尾随审查；查帐索引；逐位跟踪
follow the trail 顺着足迹
in trail adv.
- trailsn. 山径；游径；踪迹（trail的复数）; vt. 拖尾（trail的第三人称单数）; vi. 拖曳（trail的第三人称单数）
on the trail 追踪，寻找；在山径上
audit
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