momentum
含义: In physics, the quantity of motion of a moving body, equal to its mass multiplied by its velocity; figuratively, the impetus gained by a process or course of events.
Momentum is a conserved quantity in physics — in a closed system, the total momentum before and after a collision remains the same. The figurative use is widespread in media, politics, and business, describing the force or drive behind a movement or trend. Common collocations include 'gain momentum,' 'lose momentum,' and 'build momentum.'
例句
- The conservation of momentum explains why a snooker ball transfers its energy to another upon impact. 动量守恒解释了为什么台球在撞击时会将能量传递给另一个球。La conservación del momento explica por qué una bola de billar transfiere su energía a otra al impactar.運動量の保存は、ビリヤードの球が衝突時に別の球にエネルギーを伝達する理由を説明する。운동량 보존 법칙은 당구공이 충돌 시 다른 공에 에너지를 전달하는 이유를 설명한다.
- The campaign gained momentum after a series of endorsements from prominent figures. 在一系列知名人士表态支持后,该运动获得了动力。La campaña cobró impulso tras una serie de apoyos de figuras prominentes.著名人からの相次ぐ支持を受けて、そのキャンペーンは勢いを増した。저명인사들의 잇따른 지지를 받으며 그 캠페인은 탄력을 얻었다.
- The company must maintain its momentum if it hopes to overtake its competitors by year's end. 如果公司希望在年底前超越竞争对手,就必须保持其发展势头。La empresa debe mantener su impulso si espera adelantar a sus competidores antes de que acabe el año.年末までに競合他社を追い越すには、同社は勢いを維持しなければならない。연말까지 경쟁사를 추월하려면 그 회사는 추진력을 유지해야 한다.
发音
用法指南
语境: academic, professional, media
语气: neutral
起源与历史
From Latin momentum (movement, moving power), a contraction of movimentum, from movere (to move). Used in English since the 17th century, initially in the physics sense.
文化背景
Era: Modern
Generation: All ages
Social background: Universal
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