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Sentence
Span Details
天変地異説
catastrophismnoun
は、
topic markergrammar
かつて
once; before; formerly; ever; never yet; never before; first time-> 嘗てadverb, no-adjective
地質学
geologynoun
で
location, means, or scope markergrammar
有力
influential; prominent; leading; strong; promising; likely; convincingna-adjective, noun
だった
past copulagrammar
考え方
way of thinking; mindset; approachnoun
だ。
plain copulagrammar