这些纸用来封住墙壁和屋顶的洞。The paper was used for sealing up holes in walls and roofs.石料开始被用作盖屋顶的材料。Stone began to be used as a roofing material.我们从屋顶的小洞能看见星星。We could see the stars through an opening in the roof....
The Drafting Committee will be in charge of working out a draft resolution to be submitted to the Conference for deliberation.起草委员会将负责起草提交大会讨论的决议草案.Modern controlled drafting systems use drafts of the order of 30.新式的牵伸控制...
如果这额外的电容器是偏颇的, 那么说,能源将排放入火花隙.If this extra capacitor is biased, then the added energy will discharge into the spark gap.离子电流测量火花隙回应压力波所产生的爆震.Ion current measured at spark gap responds to pressure waves resulting from kno...