Last Updated：2025/12/02
Sentence
そのスタートアップはエコ技術の展示会でトウモロコシの芯から作られたエンジンを披露し、その効率の良さに多くの技術者を驚かせた。
Quizzes for review
The startup showcased corncob engines at the eco-technology fair, surprising many engineers with their efficiency.
See correct answer
The startup showcased corncob engines at the eco-technology fair, surprising many engineers with their efficiency.
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