Enumerations and numeric ranges: For example, the value of a particular string attribute must be a, c, or D. Another example: the value of a particular numeric must be between 1 and 500.
枚举与数字范围：例如，某个特定字符串属性必须为A、c或者d。再比如，某个特定的数字必须在1至500之间。
D {format} : the format is passed to strftime (3) and the result is inserted into the prompt string; an empty format results in a locale-specific time representation.
D {format}：括弧里的字符串被传递给strftime(3)函数，返回值填充到提示符中。如果不传参数，会按照系统默认的当地时间格式来显示。
Everything from parsing the interpreter command line arguments (things like rubinius -d -v, which turn on debugging and warnings) to all the methods on String.
所有解释器都可以解析命令行参数字符串(就像rubinius- d - v这样开启调试和警告信息)。
D-A-V-I-D so when you get a string like D-A-V-I-D, what's really happening is inside your computer's RAM is going a byte where there's some zeros and ones.
譬如你有这么一个字符串，而在你电脑的RAM里将会变成，一个个由0和1组成的字节。
You can pad an integer with leading zeros by using the "D" standard numeric format string together with a precision specifier.
您可以将 “D”标准数值格式字串与有效位数规范一起使用，以前置字元零填补整数。
First string through the shoulder plate as shown in Figure c, then string through chest plates shoulder plate hole, tighten the knot below the armpit as shown in Figure d.
先把绳如图c所示穿过肩甲，再穿过胸甲的肩部孔，在腋下收紧打结。如图d所示。
String Quartet no. 3 in D minor, Op. 11, Quatuor brillant.
小调第三弦乐四重奏曲，作品11，“光辉灿烂的四重奏曲”。
String Quartet no. 3 in D minor, Op. 11, Quatuor brillant.
小调第三弦乐四重奏曲，作品11，“光辉灿烂的四重奏曲”。
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