jump through hoops短语¹⁰⁶¹⁰⁰⁺⁵ 基本例句 经受磨难; 做出很大努力,俯首帖耳,百般讨好 The most common mistake with bounded wildcards is forgetting to use them at all, restricting the utility of a class or forcing users to jump through hoops to reuse an existing class. 最常见的有界通配符错误就是忘记使用它们，这就限制了类的使用，或是强制用户不得不重用现有的类。 ibm