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9.Sometimes theadjustment(调节)  is necessary before you use the seatbelt.

分析 有时在使用安全带之前有必要调节一下.

解答 答案:adjustment
adjustment 调节,抽象名词;在句中做主语,谓语动词是单数,用原形即可.

点评 翻译填空题考查的是词汇的记忆和运用能力,平时要注意积累和运用.同时还要注意区分近义短语.

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