Tracks are chosen so that the judge or steward can easily determine where the track is located, and where articles are to be placed, even after the marks, ribbons, or flags have been removed.

即使在记号、彩带、旗帜被移除后，裁判或赛事管理员仍清楚的知道气味轨迹和物品位置的所在。

youdao

Europe is facing the twin challenge of trying to get economic growth back on track while being a good steward of the environment.

WSJ: EU Protectionism Passed Off as Environmentalism

That's why Byrne suggests designating a wiki gardener or steward to help keep things clear and on track.

FORBES: Magazine Article