This method will fail if all available positions are before the last assigned position.
如果所有可用位置都在最后一个被赋值的位置之前,此方法将失败。
An animal's action to remain at an assigned position, usually in a fixed posture, for a period of time designated by a trainer.
动物于训练员的指示下,到指定的位置保持一稳定姿势,并维持一段时间。
There are zero available edit positions in the formatted string, or there are no available edit positions after the last assigned position.
带格式字符串中没有可用的编辑位置,或者在最后一个被赋值的位置后面没有可用的编辑位置。
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