Dot-decimal Notation 十进制点符号 ; 点分十进制
It is common for intruders to create directories whose names start with a decimal dot character, which makes them invisible or hard to find.
这是很常见的入侵者创建目录的名称以小数点字符开始，这使得它们看不见或难以找到。
The little dot near the centre is the decimal point.
怪圈中心近处的那个小圆圈，就是小数点。
A dot written in a decimal number to indicate where the place values change from positive to negative powers of 0.
十进制小数中的点，表示从该点开始，值就从0的正次幂变成0的负次幂。
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