英语词汇preparatory exercise是什么意思，preparatory exercise的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典

单词	preparatory exercise
释义	preparatory exercise　准备操
随便看	percent reduction percent reduction percent reduction percent response percent return and allowances to sales percent ripple percent set Percent Sign percent sign percent sound articulation Percent Style percent style percent syllable articulation percent symbol percent utilization of capacity percent vowel articulation percent,per percent-of-sales method percentage Percentage percentage percentage percentage percentage absolute humidity percentage analysis

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