1. “Forty,” she says. “I don't think so. Try somewhere around twenty.”
    "40？"她说："我看不见得。大约20左右吧。"

2. “Twenty-three pounds. Why?”
    "23磅。怎么啦？"

3. Glancing at his map, he informed us that the next village was a mere twenty miles away.
    他瞥了一眼地图，告诉我们前面再走不到20英里就是一个村庄。

4. (If each calendar year were to be several days shorter than the time it takes the earth to go round the sun, the coldest winter days would soon come round in the middle of October in some twenty years!)
    （如果每个日历年都比地球围绕太阳旋转一周所花费的时间少几天，那么二十年后，冬天最冷的几天就会在十月中旬左右出现！）

5. "Four sixes is twenty-four; that´s one pound four," said Easton as he wrote down.
    “四六二十四，一英镑四先令。”伊斯顿边说边记了下来。

6. It´s hard to say.Usually,it takes twenty -five minutes.
    很难说,通常需要二十五分钟.

7. It only takes me about twenty minutes.
    它只花了我大约二十分钟.

8. It is a strange thought, but I believe a correct one, that twenty or thirty pages of ideas and information would be capable of turning the present-day world upside down, or even destroying it.
    这是个离奇的想法。不过我认为这个想法是正确的。

9. I immediately embarked on an experiment which, even though it failed to get rid of the ants, kept me fascinated for twenty-four hours.
    我当即动手作了一项试验，这项试验尽管没有使我摆脱这些蚂蚁，却使我着迷了24小时。

10. Imagine a star up to twenty times larger, brighter and hotter than our own sun.
    设想一下，一颗恒星比我们的太阳还要大，还要亮，还要热20倍，