In theory, he says, such devices could maintain their power indefinitely until used, unlike batteries whose charges leak away gradually as they sit unused.
理论上,他说,这种设备应该能够无限期地保持它们的电量,直到它们被使用;不像电池,当它们未被使用时电荷也在渐渐泄漏。
The only other addition is the call at the end of the class to remove the property that you set, which is just a precaution to ensure that memory does not leak away unexpectedly.
唯一增加的是访问类的末尾,以除掉您设置的属性,这只是一项预防措施,确保存储的不会意外的逐渐消失。
But confidence can leak away rapidly.
但是机密很快泄漏。