删除器 meaning in English

deletor

It might be possible in something like eiffel to add enough contractual constraints on every " adder " and " deleter " to make sure dtd validity is maintained or , with enough work , in all the mentioned languages , but doing so involves custom programming within every
在如eiffel等语言中，有可能在每个“加法器”和“删除器”上添加足够的约定限制，以确保维护了dtd有效性（或者，如果进行足够工作，在所有提到的语言中），但是这样做涉及每个