人无远虑，必有近忧，同样一个公司或组织若墨守成规或因循守旧而没有新生力量或新鲜血液的话，那么很容易滋生腐败和腐朽。每个人都应该尝试去接受或挖掘新鲜事物，取其精华，去其糟粕，让自己永远处于被激活的状态，那么成功就指日可待了。
新生力量，或按中文理解的用作比喻的”新鲜血液“，用地道且贴切的英语表达是 young blood，意为”新生力量，新鲜血液，新成员，年轻人“等，例如：This company needs an infusion of young blood before it becomes completely irrelevant in today's world.在当今世界，这家公司在变得完全无关紧要之前需要注入新鲜的血液。The family business was badly in need of young blood.We need to introduce more young blood into the organization.The only problem with this committee is that they do not feel the need to incorporate the young blood in their decision-making processes.这个委员会唯一的问题是，他们觉得没有必要把年轻人纳入他们的决策过程。
跟 young blood 意思类似的另外一个习语 new/fresh blood，它也可以用来表示新生力量或新成员等，例如：
With everything going digital and online, we're going to need some fresh blood if we want to remain a viable company in today's market.随着一切都数字化和网络化，如果我们想在当今的市场上保持一个有活力的公司，我们将需要一些新生力量。They really need some new blood onboard to bring a fresh perspective to how things should work.他们真的需要一些新生力量来给事情的发展带来新的视角。
看完以上习语，你会发现习语中的 blood 离”血液“的意思越来越远，就像 习语 blue blood 种的 blood 一样，它已经跟”血液“没有关系，用来比喻出身名门或出身高贵等，例如：The earl refuses to allow anyone who is not of blue blood to marry his son.Although Mary's family is poor, she has blue blood in her veins.
血液 blood 也是属于身体的一个组成部分，是众多表身体组成部分单词中的一个。当然 blood 对应的寓意有褒义也有贬义，贬义的如老式的 bad blood (between A and B) 和 in cold blood 等，例如：bad blood (between A and B) （A和B之间）的仇恨或厌恶：Last year's brutal playoff series created some bad blood between these two teams.去年残酷的季后赛系列赛在这两支球队之间制造了一些仇恨。There's bad blood between Elise and Piper, so don't leave them alone together.伊莉丝和派珀之间有仇恨，所以不要把他们单独留在一起。in cold blood 残忍地，蓄意地，无情地：The killer walked up and shot the woman in cold blood.How insulting! For a person to say something like that in cold blood is just horrible.太侮辱人了！对一个人来说，无情地说那样的话简直太可怕了。
1. infusion [ɪnˈfjuːʒn] 意为“注入，输入，灌输”等
2. perspective [pəˈspektɪv] 意为“态度，观点，远景”等
