For five months, Mark struggled to get the project on track and his confidence suffered.
5个月里，马克努力着使项目步入正轨并经受着自信心的折磨。
Track down a geocache and then leave my mark.
跟踪一个geocache并留下自己的标识。
On the day of the race, Kathleen and Mark arrived at the track.
赛跑当天，凯萨琳和马克抵达田径场跑道。
Mark your shoes with the purchase date to keep track.
在你的鞋上注明购买日期以便追踪吧。
Mark your shoes with the purchase date to keep track.
在你的鞋上注明购买日期以便追踪吧。
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