add_ignore
shpere_du/dt_ok_not work
Revert "shpere_du/dt_ok_not work"

This reverts commit 810808b5904664e79d47c9742296095a923122b4.
Revert "insert_dv/du+dv/dt=0_with_BUGS"

This reverts commit 78887f967a27408cb9450890391a3e9bc572fce9.