英语词汇back-of-an-envelope怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

1
The notes were always on scratch paper or the back of an envelope, nothing fancy.
这些笔记总是在便笺或信封背面上，没什么特别的。
《柯林斯英汉双解大词典》
2
Several days later, I was bringing our garbage bins back from the curb when I noticed an envelope taped to one of the lids.
几天后，我把垃圾桶从路边拿回来时，注意到一个盖子上贴着一个信封。
3
Not content with letting thesupercomputer do all the arithmetic, the mathematicians simultaneously jotteddown some calculations of their own on the back of an envelope.
因为不满足于让计算机完成全部的算术工作，数学家同时也在信封背面进行一些计算工作。

单词	back-of-an-envelope
释义	back-of-an-envelope 简明释义 adj.粗略的，快速估算的（同 back-of-the-envelope）双语例句 1 The notes were always on scratch paper or the back of an envelope, nothing fancy. 这些笔记总是在便笺或信封背面上，没什么特别的。《柯林斯英汉双解大词典》 2 Several days later, I was bringing our garbage bins back from the curb when I noticed an envelope taped to one of the lids. 几天后，我把垃圾桶从路边拿回来时，注意到一个盖子上贴着一个信封。 3 Not content with letting thesupercomputer do all the arithmetic, the mathematicians simultaneously jotteddown some calculations of their own on the back of an envelope. 因为不满足于让计算机完成全部的算术工作，数学家同时也在信封背面进行一些计算工作。
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