| 1. | A maths problem in short term cost analysis
短期成本分析的一个数学问题 |
| 2. | Do you have a math problem , or . . .
你是有什么数学问题？还是… … ？ |
| 3. | Lightly touch certain numbers to enter a math problem
轻轻地按某些特定数字，输入一道数学题。 |
| 4. | He is working hard at a maths problem
他正在用心做一道数学题。 |
| 5. | He was thinking about a math problem
他正在思考一道数学题。 |
| 6. | Do you have a math problem , or .
你是有什么数学问题？还是？ |
| 7. | He would rap at the desk when he had difficulty working out a math problem
他做数学题遇到困难时往往要敲书桌。 |
| 8. | He would rap at the desk when he had difficulty working out a maths problem
他做数学题遇到困难时往往要敲书桌。 |
| 9. | He is working on a math problem , and i don ’ t doubt he can work out it
他正忙着一道数学题，我毫不怀疑他肯定能解答出来。 |
| 10. | Teacher : i know most of you are interested in maths . today , i ' d like you to work out a maths problem . please look at the screen
（我知道大家对数学感兴趣，今天我想让你们做一道数学题请看大屏幕） 。 |
