It is a waste of time and energy to argue with such kind of person.
与这种人理论简直是浪费时间和精力。
Giving unsolicited advice to others—regardless of how much you feel that they need it—is a waste of time and energy.
上赶着【编者按：意为别人本没有要求或者请求做某事，而主动提出帮助等举动，带有吃力不讨好等嘲讽或讽刺的意味】提建议——不管你就觉得他会多么需要——都是一件耽误时间和精力的事。
Re-doing or re-checking your work when you could just take it easy and do it right the first time is frustrating and a waste of energy.
这些重复的工作或检查是很令人沮丧的，还浪费了精力，因为你本来就可以在第一遍的时候就放轻松些把工作踏踏实实的做好。
Worrying is a normal part of human nature. It is also a waste of both time and emotional energy - "long-distance worrying" especially so.
焦虑是人类正常生活的一部分。，也是时间和情感经历浪费，尤其是长期的焦虑。
Another prerequisite is learning to recognize when there's scope for negotiation, because without it, you can waste a great deal of time and energy.
另外一个必要条件是学会识别什么时候有谈判的余地，因为没有余地的话，你会浪费很多的时间和精力。
Another prerequisite is learning to recognize when there's scope for negotiation, because without it, you can waste a great deal of time and energy.
另外一个必要条件是学会识别什么时候有谈判的余地，因为没有余地的话，你会浪费很多的时间和精力。
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