“Record high” in Japanese
Short answer
Record high in Japanese is “史上最高” (shijousaikou). Full meaning: record high, all-time high.
Other ways to say “Record high” in Japanese
最高値
saitakane all-time high (price, in trading), record high, new high; highest value, maximum value
過去最高
kakosaikou highest ever, record-high, highest on record
過去最多
kakosaita highest ever (number of), record-high, most on record
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