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How to say "Marginal" in Japanese

Both words can translate to "marginal", but which should you choose?

Japanese Option A

技術的限界代替率

ぎじゅつてきげんかいだいたいりつ (gijutsutekigenkaidaitairitsu)
C2 / CEFR Syllabus
VS
Japanese Option B

限界収入生産物

げんかいしゅうにゅうせいさんぶつ (genkaishuunyuuseisanbutsu)
C2 / CEFR Syllabus

Nuance Contrast & Translation Difference

When translating "marginal" into Japanese, you must choose carefully between 技術的限界代替率 and 限界収入生産物. In Japanese, 技術的限界代替率 (ぎじゅつてきげんかいだいたいりつ (gijutsutekigenkaidaitairitsu)) is typically associated with "marginal rate of technical substitution" (Syllabus Level: C2) and represents Essential structural term in CEFR C2 vocabulary syllabus.. On the other hand, 限界収入生産物 (げんかいしゅうにゅうせいさんぶつ (genkaishuunyuuseisanbutsu)) maps to "marginal revenue product" (Syllabus Level: C2) and represents Essential structural term in CEFR C2 vocabulary syllabus.. A literal translation of "marginal" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "技術的限界代替率"
私は技術的限界代替率に興味があります。
I am interested in marginal rate of technical substitution.
Bilingual Context for "限界収入生産物"
私は限界収入生産物に興味があります。
I am interested in marginal revenue product.

Nuance Mastery Quiz

Which Japanese word perfectly fits this blank space?

Fill in the blank: "私は ___ に興味があります。" (Meaning: "I am interested in marginal rate of technical substitution.")
🎉 Correct Answer!

Remember: "技術的限界代替率" fits here because it means "marginal rate of technical substitution" in the context of: "I am interested in marginal rate of technical substitution.". "限界収入生産物" represents "marginal revenue product".

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