The large-diameter metalpipe connects the bell nipple to the possum belly.
大口径金属管道把钟形导向短节与泥浆储罐连接起来。
2
Further imagine that this pipe is not made of metal but a transparent magnetic field.
接着再想象一下，这样的管道不是用金属做的，而是一个透明的磁场。
3
I tried to get a sample for O.S.L. dating here, but when bits of the deposit started falling down around me, I decided that hammering a metalpipe into this rock pile might not be such a good idea.