I became what I am today at the age of twelve on a freezing cold wet day in the winter of 1975. I remember the right moment hiding behind a fragile mud wall peeking (窥视)into the alley (胡同)near the frozen stream. That was a long time ago ,but it’s
FIG. 18 shows an alternative embodiment of the tubular device where the tubular wall tapers outward toward the open end.FIG. 19 shows an embodiment of the tubular device having an identification block printed on an outside surface.DETAILED DESCRIPTION OF THE EMBODIMENTS...