Last Updated：2025/11/29
Sentence
技術者は電気の誤動作を防ぐために、古い水銀式スイッチを慎重に取り替えた。
Quizzes for review
The technician carefully replaced the old mercury switch to prevent electrical malfunctions.
See correct answer
The technician carefully replaced the old mercury switch to prevent electrical malfunctions.
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