Determine whether the string representation of a number includes a decimal point symbol.
判断数值的字串表示是否包含小数点符号。
Compared to standard point symbol, the oriented-point symbol contains direction Angle information.
相对于标准点符号，有向点符号包含着方向角信息。
Country Point: the abstraction symbol of the country on the map.
国家点：国家的抽象化代表符号，用来代表地图上的国家。
The idea was to be a symbol. Batman could be anybody. That was the point.
蝙蝠侠是一个象征，谁都能成为蝙蝠侠，这才是重要之所在！
As a kind of symbol, the language can point to both the real world and the text world.
语言作为一种符号，既可以指向现实世界，也可以指向文本世界。
As a kind of symbol, the language can point to both the real world and the text world.
语言作为一种符号，既可以指向现实世界，也可以指向文本世界。
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