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- Unsustainable momentum 缺乏后劲
- The sledge gained momentum as it ran down the hill. 雪橇从山上下冲时动量越来越大。
- An irreversible momentum toward open revolution. 朝向公开革命不可逆转的势头
- Strong forward momentum; driving force. 强大的前动力; 推动力
- The struggle for independence is gaining momentum every day. 为独立而斗争的势头日益增长。
- As the rock rolled down the mountainside, it gathered momentum. 石头滚下山时，它的动量增加。
- This is unsustainable, in the long run. 从长期来看，这是不可持续的。
- As the rock rolled down, it gathered momentum. 岩石滚下山坡时，冲力愈来愈大。
- The movement was gaining momentum. 这运动势头越来越大。
- The movement to change the union's constitution is slowly gathering momentum. 修改工会宪章的运动正慢慢加强。
- The sledge gained momentum as it run down the hill. 雪橇从山上下冲时动量越来越大。
- The train gathered momentum as it left the town. 火车出了城就逐渐加速奔驰。
- Momentum and energy have been united. 动量和能量统一了起来。
- It was a gravy train while it lasted, but it was unsustainable. 现在他们还能趁机捞一把，但这将不会长久了。
- In this chapter we will discuss angular momentum. 本章将讨论角动量。
- Angular momentum is an axial vector quantity. 角动量是一种轴矢量。
- But in the long run today's fiscal laxity is unsustainable. 长期看来，今天宽松的财政政策是不能持久的。
- China's breakneck pace of growth also looks unsustainable. 中国极快的增长速度看来不可能长期维持。
- Agriculture had been keeping sound growth momentum. 农业生产形势良好。
- Unsustainable in the long run, but perfectly sustainable in 2007. 这在长期是不可持续的，但在2007年则完全可以持续下去。
