她叫我们用胶水把信封的背面封好。
请在信封的背面写下你的名字。
Please write down your name on the reverse side of the envelope.
请将您的地址写在信封的背面。
我在信封的背面做了一个粗略的估算。
我在一只信封的背面草草写下这些话，并跟阿拉斯泰尔讨论起来。
I 4 scribbled it on the back of an envelope, and discussed it with 5 Alastair.
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。
Not content with letting thesupercomputer do all the arithmetic, the mathematicians simultaneously jotteddown some calculations of their own on the back of an envelope.
他在一封2003年才发现的信封背面写下日期。
He noted that on the back of an envelope that wasn’t discovered till 2003.
根据我非正式的统计结果，我在信封背面所计算出的统计数值令人相当失望。
The results of my informal, back-of-the-envelope calculations were rather disheartening.
以前的很多时候，她就是通过在信封或者餐巾纸的背面画化学键的草图，向父母解释她在实验室里的工作。
And on many occasions, it was on the back of an envelope or on a napkin that she doodled sketches of the chemical bonds to better show her parents what she was working on in the lab.
这张旧邮票的背面没黏性了，我得用胶把它粘在信封上。
This old stamp isn't sticky any more; I shall have to gum it down onto the envelope.
每封“邮件”在信封正面写上地址，背面写上序列代码，在信封里装上大块的数据。
Each "letter" has an address on the front, a sequence code on the back, and a chunk of the data inside the envelope.
每封“邮件”在信封正面写上地址，背面写上序列代码，在信封里装上大块的数据。
Each "letter" has an address on the front, a sequence code on the back, and a chunk of the data inside the envelope.
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