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Sentence analysis
11Spans
Sentence
Span Details
地磁気逆転
geomagnetic reversal; reversal of Earth's magnetic fieldnoun
は
topic markergrammar
数十
dozens; scores of; decadesnoun, no-adjective
万年
ten thousand years; an extremely long time; eternity; perennial; perpetual; ever-presentnoun, noun prefix
に
direction, time, indirect object, or target markergrammar
一度
once; one time; on one occasion; temporarily; for a time; for a moment; one degree; one tone; one musical intervalnoun, adverb
起こる
happen; occur; arisegodan verb
と
quotation, conditional, companion, or and markergrammar
考え
think about; ponder; reflect on; consider; take into account; bear in mind; think that; believe; hold the view that; intend to; plan to; think of doing; expect; anticipate; imagine; come up with; devise; think up; regard as; consider as; view as-> 考えるichidan verb
られ
passive, potential, or respect auxiliary-> れる/られるgrammar
ている。
ongoing or resultant stategrammar