您要查找的是不是：
- Oil or water tanks shall have oil tight or watertight manhole covers. 油柜或水柜应该有相应的油密或水密人孔盖.
- watertight manhole 水密人孔
- Is this roof completely watertight? 这屋顶一点也不漏吗？
- I'll have watertight windows fixed. 我要装上不漏水的窗。
- As soon as the alarm went, the crew raced round shutting the watertight doors. 警报一响，船员们跑来跑去把船上的密封门关紧。
- Someone is working in the manhole. 有人在（锅炉的）检修孔中工作。
- The watertight flaps of ventilators of tool &spare rooms were not in close position and the access manhole cover not closed watertightly. 工具间和备品间的通风筒的水密挡板没有关上，出入口人孔盖的关闭不水密。
- I need to find a manhole tool... 我需要找个通道盖子工具...
- These materials need not be watertight. 这些材料无需有防水性。
- Here's the question: Why are manhole covers round? 这个问题是：为什么下水道井盖都是圆的?
- I will have watertight windows fixed. 我要装上不漏水的窗。
- Or the manhole cover outside your apartment? 还是你公寓外面的下水井盖?
- Why are manhole cover round in shape? 点解下水道的盖是圆形的?
- The system, of course, is not watertight. 当然这套系统也不是天衣无缝的。
- She had 16 watertight compartments. 船上有16个密封舱，
- Please move the manhole cover away. 请将人孔盖移开。
- The case has to be made watertight. 案由必须做到无懈可击。
- We can make a manhole for servicing. 可做维修清洗人孔。
- Cast iron manhole covers are the best alternatives. 是铸铁井盖最理想的替代品。
- Close watertight doors and report. 关闭水密门并报告。
