Moreover this gradual contraction inlet may translate some pressure energy of liquid into kinetic energy and increase circumrotate speed. These play active actions on improving separation efficiency.

同时这种渐缩式入口方式，可将来液的一部分压能逐渐转化为动能，提高了旋流速度，对提高分离效率起到积极作用；

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All this suggested that America was more likely to endure a gradual, even gentle, slowing of economic growth than a sharp contraction.

所有这一切都表明，美国更可能经历逐步的、甚至是和缓的、减速的经济增长，而非一场剧烈紧缩。

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Its prosperity initially rested on the fishing industry, but amid the gradual contraction of this sector, the financial sector expanded dramatically overseas.

BBC: Credit crisis: World in turmoil