Muhammad says he spent his youth farming and fighting in the mountains, and never set foot in his town's tiny elementary school.
穆哈马德说他的童年是在农场做活和山里打架中度过的，从来没有进过他镇上那个袖珍小学。
2
Perhaps one of the most important additions in MathML3 is a new set of functionality for laying out elementary math. These are the tabular layouts used for long multiplication and long division.
也许MathML3中最重要的增加是一组用于布局基本数学公式的新功能，即用于长乘和长除的表格布局。
3
The difficulties stem from the fact that the interaction between elementary particles and fields is really too violent for a satisfactory theory to be set up.