常有壳大盖小或者壳小盖大的现象

常有壳大盖小或者壳小盖大的现象

Results (English) 1:

There is often a phenomenon that the large shell cover is small or the small shell cover is large

Results (English) 2:

Often there is a large shell cover small or shell small cover large phenomenon

Results (English) 3:

There is often the phenomenon that the shell is large and the cover is small or the shell is small and the cover is large