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Sentence
Span Details
非ユークリッド空間
non-Euclidean spacenoun
では、
contrastive で + は; then; well thengrammar
平行線
parallel lines; remaining far apart; not reaching an agreement; views that never crossnoun
が
subject markergrammar
交わる
cross; intersect; meet; associate with; mingle with; keep company with; have sexual relations; copulategodan verb
ことがある。
have done (something); something has occurred; sometimes; there are times when-> 事があるexpression, verb