That's when astronomers turned up a handful of large trans-Neptunian objects that led to the creation of the "dwarf planet" category.
当时科学家们连续发现了不少海王星外的大型星体，继而产生了“矮行星”这一分类。
The IAU further resolves that Pluto is a dwarf planet by the above definition and is recognized as the prototype of a new category of Trans-Neptunian Objects.
根据上述的定义，国际天文联会进一步决定将冥王星拨归为矮行星，并成为其中一类海王星外天体的原型。
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