| 单词 | head of steam |
| 释义 | head of steam(hɛd əv stiːm) noun 1. momentum; driving power The campaign for more debt relief for the poorest countries has gathered an impressivehead of steam. 2. to build up a head of steam 3. engineering the steam produced by a boiler A full head of steam from seven boilers drove her two quadruple expansion enginesever faster. |
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