短语 | hammer at |
释义 | hammer at1.锤打;敲打:Henry hammered at a nail,he wanted to drive its cap in and make the surface smooth.亨利锤打一根钉子,他想把钉子帽打进木头中,使表面平滑。2.辛苦工作:When and how our solar system came into being,many astronomers are hammering at this problem.我们的太阳系是什么时候形成的和如何形成的,许多天文学家正在苦心钻研这个问题。 |
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