the three R's 是什么意思,the three R's 的翻译,解释,句子,音标,读音 - 英汉在线翻译

the three R's

the three R's 的中文翻译

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您知道这些英语的中文翻译吗?更换...

to the best of my recollection
standby machinery
quanta
duplex steam pump
principle of similitude
attribution
national interest
manganese hypophosphate