momentum
音标：
英音/ məˈmentəm / 美音/ moʊˈmentəm /
听听基本释意：
外刊例句：
The idea behind a commission is to create bipartisan momentum for politically tough decisions about taxes and spending — exactly what Congress has avoided for the last 25 years.
成立该委员会的目的是为两党在税收和支出方面做出艰难的政治决策创造动力——这正是国会在过去 25 年里一直在避免的事情。
—Washington Times
As for expectations for next year, Elkann says: “What’s really important is to maintain the pace and momentum of improvement. Every year will be difficult for unknown reasons.”
至于对明年的期望，埃尔坎说：“真正重要的是保持改进的步伐和势头。由于未知的原因，每一年都会很困难。”
—BBC
Conversely, a strong performance – even one that doesn’t result in first-place – could potentially inject momentum into the campaigns.
相反，强劲的表现——即使没有获得第一——也可能为竞选活动注入动力。
—BBC
基本释意：
noun
the product of a body’s mass and its velocity
冲力，推力；动力，势头；动量，冲量
同义词：
impulse
短释义：
To find an object’s physical momentum you multiply its mass by its velocity. Determining the momentum of the economy or the latest fad is much more difficult. Used figuratively, momentum implies that, like a boulder rolling down a hill, something with momentum will continue moving forward on its own. If you’re running for class president, you might want to build momentum by holding a few rallies, passing out flyers and starting a website. Once you have momentum, your opponents won’t be able to stop you.
动量通常用于表示增加的向前运动。滚下山坡的巨石获得了动力。一个伟大的想法、一支连胜的球队或经济也是如此。
长释义：
To find an object’s physical momentum you multiply its mass by its velocity. Determining the momentum of the economy or the latest fad is much more difficult. Used figuratively, momentum implies that, like a boulder rolling down a hill, something with momentum will continue moving forward on its own. If you’re running for class president, you might want to build momentum by holding a few rallies, passing out flyers and starting a website. Once you have momentum, your opponents won’t be able to stop you.
要找到物体的物理动量，请将其质量乘以速度。确定经济的势头或最新的时尚要困难得多。用比喻来说，动量意味着，就像一块巨石从山上滚下来一样，有动量的东西会继续自行前进。如果您正在竞选班长，您可能需要通过举行几次集会、分发传单和创建网站来建立势头。一旦你有了动力，你的对手将无法阻止你。
文学例句：
The drum roll mounts as she gains momentum.
当她获得动力时，鼓声越来越大。
—Water for Elephants by Sara Gruen
The entire momentum of her body went into a sharp twist, literally forcing Stubble Chin into trying a backflip.
她身体的整个动量急剧扭曲，简直迫使斯塔布尔·钦尝试后空翻。
—City of the Plague God by Sarwat Chadda
I needed to get some momentum going so that I wasn’t just sitting with my feet dangling in the puddle below me.
我需要获得一些动力，这样我就不会只是坐在那里，双脚在下面的水坑里晃来晃去。
—Because of Mr. Terupt by Rob Buyea
词源：
momentum (n.)1690s in the scientific use in mechanics, “product of the mass and velocity of a body; quantity of motion of a moving body,” from Latin momentum “movement, moving power” (see moment). Figurative use, “force gained by movement, an impulse, impelling force,” dates from 1782.Related entries & more
下面是词源的翻译（机器翻译比较难翻，参考着看）
动量（n.）1690年代在力学中的科学使用，“物体的质量和速度的乘积；运动物体的运动量”，源自拉丁语动量“运动，移动功率”（参见时刻）。比喻用法“通过运动获得的力、冲动、推动力”可以追溯到 1782 年。相关条目及更多
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