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Sentence
Span Details
原子炉
nuclear reactor; atomic reactornoun
の
possession, attribution, nominalizer, or nominal linkergrammar
設計
plan; design; layoutnoun, suru verb
に
direction, time, indirect object, or target markergrammar
は
topic markergrammar
臨界実験
critical experiment (nucleonics)noun
が
subject markergrammar
欠かせない。
indispensable; essential; vital; crucialexpression, i-adjective