1·There are two remaining things to parse: the time specifier, which is the first argument after the options, and the message, which is any remaining arguments.
还剩下两项内容需要解析：时间说明符，它是选项后的第一个参数，以及消息，消息是剩余的参数。
2·The %03d is a printf-style format specifier.
03d 是 printf风格的格式说明符。
3·A logical address consists of a segment register specifier and offset.
一个逻辑地址包含了段寄存器的说明符及偏移量。
4·Note that this specifier never displays the '0' character if it is not a significant digit, even if '0' is the only digit in the string.
请注意，如果“0”不是有效数字，此说明符永不显示“0”字符，即使“0”是字符串中唯一的数字。
5·The number is converted to the most compact of either fixed-point or scientific notation depending on the type of the number and whether a precision specifier is present.
根据数字类型以及是否存在精度说明符，数字会转换为固定点或科学记数法的最紧凑形式。