a white space的用法和样例：
- The value is a white space separated list of name tokens of the nodes whose white space only text nodes must be preserved.
- How well one color overlaps another without leaving a white space between the two or generating a third color. See also: choke; spread.
- Only white space is allowed to precede a statement.
- Do you know the man wearing a white shirt?
- I lost a white handkerchief with a blue border.
- He was at a white heat, when I paid him a visit.
a white space的相关资料：
Aongus a a quick short straight punch. a major difference of principle a good understanding of grammar a roof peppered with hailstones a pentagon winding link pattern A belfry full of curiousnotions A Trip to Miao-Inhabited Area A warm climate suits oranges. A-makes strange bedfellows. a vocabulary of technical terms