Instead of picking on countries like Iran, which do not possess an atom bomb, the rest of the world should, he said, rid itself of existing nuclear weapons.
The first atom is the operator, and the rest of the atoms in the list are the arguments.
第一个原子是运算符，列表中其余的原子是参数。
3
The first selector returns the first atom of a list, and the rest selector returns the whole list except for the first atom. Listing 4 shows these selectors