将器官刀添加回来，移除它们是我最讨厌的改动，但依旧遵循现在精创的器官代码，需要双击两次器官刀才可以割下对应器官，起码不用去割长在胳膊上的心脏了
added the organ knife back. Removing it was the change I disliked the most, but I still followed the current organ code. You need to double-click the organ knife twice to cut off the corresponding organ. At least you don't have to cut off the heart that grows on the arm.
