一个以机智而闻名的侏儒诗人刚刚去世，留下了一个无人能解开的难题箱。
A gnome bard renowned for his cleverness has just died, leaving behind a puzzle box that no one can open.
介绍笔者在对软土地铁车站结构进行振动台模型试验的过程中，在模型箱设计方面遇到的技术难题及其解决途径。
This paper describes the technical difficulties and resolutions of the test box design in the shaking table test for subway station structures in soft soil.
轮马达齿轮箱裂纹修复是轮马达修理中的一大难题，长期未能解决。
It is a big difficult problem to repair the crack of gear box if wheel motor in wheel motor repairing.
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