小徑, 蹤跡
a path or track made across a wild or rough region
痕跡, 蹤跡
a mark or a series of marks left by a person, animal, or thing as it moves along
追蹤, 跟蹤
to follow a person or animal by looking for marks or signs that they have left behind
拖, 飄動
to drag or stream behind something or someone