blocked hole 中文意思是什麼
blocked hole
解釋
二次爆破的炮眼-
This beam crossed, or rather blocked up, the hole dant s had made ; it was necessary, therefore, to dig above or under it
這條橫梁擋住了,或更貼切地說,完全堵住了唐太斯所挖成的洞,所以必須在它的上面或下面從頭再挖起。
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