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Sentence analysis
7Spans
Sentence
Span Details
集中力
concentration; ability to concentratenoun
を
object markergrammar
持続
continuation; persistence; sustainingnoun, suru verb
させる
causative auxiliary-> せる/させるgrammar
の
possession, attribution, nominalizer, or nominal linkergrammar
は
topic markergrammar
難しい。
difficult; hard; complicated; serious; tricky; hard to handle; not feasible; difficult to do; not possible; fussy; particular; hard to please; sullen; glum; serious-looking; dirty; unclean; detestable; unpleasant; uncomfortable; creepyi-adjective