1. The boy is mustard on the theory of numbers and on solid geometry.
    这男孩对算术和立体几何有强烈的兴趣。

2. The toodle is a little square of paper with a bit of mustard (芥末) rolled up into it.
    它是由一块方形小纸片卷上些芥末做成的。

3. You could take a toodle to work in the morning with a piece of cold meat and squeeze some fresh mustard on it at lunch.
    早晨上班时带着它，再带一块冷肉，中午吃饭时就可挤一些新鲜芥末在肉上一起吃。