n.

a track or mark left by something that has passed

"there as a trail of blood"; "a tear left its trail on her cheek"

a path or track roughly blazed through wild or hilly country

evidence pointing to a possible solution

"the trail led straight to the perpetrator"

同義詞：leadtrack

Trails and U-turns in the selection of a path by the ant Lasius niger
INFLUENCE OF RECREATIONAL TRAILS ON BREEDING BIRD COMMUNITIES
A tale of three greenway trails: user perceptions related to quality of life
Mining the search trails of surfing crowds:identifying relevant websites from user activity
Modern Mucociliary Creeping Trails and the Bodyplans of Neoproterozoic Trace-Makers
Spatial responses of wolves to roads and trails in Jasper National Park
Beyond browsing: shared comments, SOAPs, trails, and on-line communities
Multivariate Statistical Analysis of Audit Trails for Host-Based Intrusion Detection
Cohort Profile: The Dutch ‘TRacking Adolescents’ Individual Lives’ Survey’; TRAILS
A menu-driven facility for complex sample size calculation in randomized controlled trails with survival or binary outcome