Stretch the rubber ring and install it at the proper location at the spigot of the pipe about to be laid.
将橡胶圈展开,并将它安装在下一节将要安装的管道的插口端上正确的位置。
2
Then I took a bite to eat, and by and by laid down in the canoe to smoke a pipe and laid out a plan.
随后我就拿点东西来吃,不一会儿又躺在划子里抽了袋烟,琢磨出个主意来。
3
Therefore the general construction process scheme is worked out as follows: open trench drainage, work site dried in the sun, conventional butt welding, and pipelaid down into trench.