Why can't be cut

Why can multiple surfaces be trimmed but can‘t CUT. A BIG BUG
222

I believe the Cut command relies on closed polysurfaces. You can use Split instead.

This command cannot be found

There is no “Cut” command. Maybe need to find the correct translation?

你用一刀去切一个环,这个环虽然多了个裂缝
但他还是一个环
如果某物体切割后数量不变,则他切割失败
所以这不是Bug