Perhaps you are a poor speller or cannot add up a column of figures.

也许是你的拼写能力太差了，又或许是你不会把纵列数字相加。

Andrew Jackson was a not odiously poor speller.

安德鲁·杰克逊单词拼写的糟糕是出了名的。

The trouble was an inadequate self-image ("I don't have a mathematical mind"; "I'm just naturally a poor speller").

问题在于一个不正确的自我意识（“我没有学数学的脑袋”，“我天生拼写方面不好”）。