1.未用铅锤线测量过垂直度的
2.未查明的;不完全懂的
3.无煤气,水管,下水道等设备的
4.未加铅封的
1.not thoroughly understood or investigated
2.not checked for verticality with a plumb line
3.not measured with a plumb line to determine depth
4.having no plumbing or sanitation installed