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Sentence analysis
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Sentence
Span Details
放射性同位体
radioisotope; radioactive isotopenoun
の
possession, attribution, nominalizer, or nominal linkergrammar
壊変
radioactive decay; disintegrationnoun, suru verb
を
object markergrammar
観測
observation; survey; measurement; opinion; prediction; thinkingnoun, suru verb
した。
light/support verb with a noun or noun-like phrase-> するgrammar