老师用括弧标出了我家庭作业中的错误。

The teacher bracketed the mistakes in my homework.

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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。

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.

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括弧中数字表示种数。

The number in brackets indicates species number.

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