permissible

adj. /pərˈmɪsəbl/ C1

允许的；许可的

Allowed by legal rules or social standards.

仙境例句

“Is it permissible to hit a ball that walks away?” Alice asked the Cat.

“打一个会自己走开的球，这样允许吗？”爱丽丝问柴郡猫。