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His theory is based on careful research.
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linked to #115895
linked to #1306683
linked to #1757263

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Sentence #287774

His theory is based on careful research.
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彼[かれ] の[] 理論[りろん] は[] 入念[にゅうねん] な[] 調査[ちょうさ] に[] 基づい[もとづい] て[] いる[] 。[]
Su teoría está basada en elaboradas investigaciones.
Onun teorisi dikkatli araştırmaya dayalıdır.
Seine Theorie gründet sich auf eine umfangreiche Untersuchung.
His theory is based on elaborate investigation.
Lia teorio estas bazita sur ampleksa esploro.