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- I make some rough calculation on the back of an envelope . 我在信封背面做了一些估算。
- I made some rough calculations in the back of an envelope. 我在信封的背面做了一个粗略的估算。
- I made some rough calculations on the back of an envelope. 我在信封背面做了一些估算。
- I make some rough calculation on the back of an envelope. 我的信封背面大概算了一下。
- L make some rough calculation in the back of an envelope. 我在信封的背面做了一个粗略的估算。
- A detachable extension to the back of an envelope, having a perforated edge and special marketing information or an order form on it. 信尾信封背面可拆掉的附加部分，其上有打孔的边缘和特定的市场信息或订购单
- I wrote out the advertisement on the back of an old envelope and read it aloud to see if it made sense. 我把广告写在一个旧信封的背面，然后大声地读了一遍看写得是不是那么回事。
- Near the end of his life, in an offhand calculation written on the back of an envelope, he suggested the year 2060. 在他生命的最后时刻，牛顿在一个信封的背面做了一个临时计算，将日期定在了2060年。
- For now, these ideas are barely more than scribbles on the back of an envelope, and critics have myriad complaints about their plausibility. 到目前为止，这些想法只不过勉强比信封背面的涂鸦来得好一点，许多评论家对于它们的说服力有一大堆的抱怨。
- He' d stuck the formula down on the back of an old envelope. 他在一个用过的信封后面写下了那个公式。
- Have you stuck down the back of the envelope? 信封背面开口处贴牢了吗？
- He secure the backing of an australian group. 他得到了一个澳大利亚集团的资助。
- I caught sight of an empty seat at the back of the bus. 我看到公共汽车的后面有一个空座位。
- There is an appendix at the back of the book. 该书末尾处有一附录。
- He have the backing of an Australian bank. 他得到一家澳大利亚银行的资助。
- Among them the back of an almirah, it is a small study. 其中一排衣橱的身后，就是一个小书房。
- Write your address on the back of envelope. 在信封的背面写上你的地址。
- Feliks saw the crest on the back of the envelope. 费利克斯看了看信封背面的顶饰。
- Three people can sit in the back of this car. 这车的后座可坐3个人。
- The roof slopes towards the back of the house. 屋顶向屋子的背面倾斜着。
