将采用十六进制的格式输出字符串“hello”的MD 5摘要。
Will output the MD5 digest of the string "hello" in hexadecimal format.
因为该数据完全是二进制且不可输出，所以已经以十六进制格式的非输出字符输出了。
The data is entirely binary and unprintable, so it has been printed out with the non-printable characters in hexadecimal format.
因为该数据完全是二进制且不可输出，所以已经以十六进制格式的非输出字符输出了。
The data is entirely binary and unprintable, so it has been printed out with the non-printable characters in hexadecimal format.
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