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Sentence
Span Details
地電流
earth current; telluric currentnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
測定
measurement; measuringnoun, suru verb
は、
topic markergrammar
地下
underground; below the ground; the grave; world of the dead; underground (activities); secret; illegalnoun, no-adjective
構造
structure; construction; makeupnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
調査
investigation; examination; inquiry; surveynoun, suru verb
に
direction, time, indirect object, or target markergrammar
役立つ。
be useful; be helpful; serve the purposegodan verb