Doing that means tackling two broad goals: considerably reducing the amount of plastic we produce and improving the recycling and reuse of what we make.
【主干】Doing that means tackling two broad goals
【修饰成分】considerably reducing the amount of plastic we produce and improving the recycling and reuse of what we make 是由and所并列的两个同位语，解释说明前面的two broad goals，其中we produce 为省略that 的定语从句，修饰前面的plastic，则翻译为“我们生产的塑料”。并且what we make在句子中作定语，修饰前面的recycling and reuse，则这一部分翻译为“我们生产的产品的回收和再利用”
【翻译】这意味着要实现两大目标：大大减少我们生产的塑料量，并提高对我们生产的产品的回收和再利用能力。
