Last Updated：2025/11/21
Sentence
技術者がロケットの推進薬に使われる酸化剤の汚染を発見したため、打ち上げは延期された。
Quizzes for review
The launch was postponed after technicians discovered contamination in the oxidizer used for the rocket's propellant.
See correct answer
The launch was postponed after technicians discovered contamination in the oxidizer used for the rocket's propellant.
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