Machining of aluminum alloy after corrosion, leave no trace.
对铝合金加工后不锈蚀，不留痕迹。
I leave no trace of wings in the air, but I am glad I have had my flight.
我是如此欣慰啊，天空没有翅膀的痕迹，但我已飞过。
Pin boards, covered on both sides with gray felt in which pins leave no trace;
两边被灰色的东西覆盖的插线杲，在它的里边插脚好象没有留下仸何的痕迹；
Since then I will know that faking can get to false, can justify from class go away, cheesy leave no trace.
从那时候起我就知道了，装病能请到假，可以名正言顺的从课堂上走开，潇洒的不留任何痕迹。
He was always careful to keep his torch pointed at the floor if he was there at night and to leave no trace of his visit.
当晚上偷入香闺时，他总是十分小心地将手电照向地板，并且不留任何入侵的痕迹。
The fallen flowers leave no trace but fragrance, in this bleak season, let the lonely silhouette dance trippingly, shaking off the dust together with the melancholy.
落花无痕，徒留馨香，在这萧瑟的季节里，任孤寂的身影翩跹起舞，荡去尘埃，舞尽惆怅。
Learn the Leave No Trace principles and the Outdoor Code and explain what they mean. Write a personal and group plan for implementing these principles on your next outing.
学习“不留下痕迹”原则和户外代码并且解释他们的含义。为在下次外出当中实现这些原则写一个个人和团队计划。
There is no commerce allowed, and it is a leave-no-trace environmentally aware event.
有没有商业的允许，这是一个假期没有追查提高环保意识的活动。
You never looking back, there is no way in to leave a little trace of nostalgia marks;
你头也不回，在来的路上没有留下一点留恋的迹痕；
You never looking back, there is no way in to leave a little trace of nostalgia marks;
你头也不回，在来的路上没有留下一点留恋的迹痕；
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