例如，美国的邮政编码是五位数字加上可选的“4个”限定号码，后者由连字符和四位附加数字组成。
For example, a U.S. ZIP code is five digits plus an optional "plus 4" qualifier composed of a hyphen and four additional digits.
甚至连白宫、五角大楼和司法部也对帕迪拉究竟会构成什么威胁存在意见分歧。
Even the White House, Pentagon and Justice Department couldn't seem to agree on what kind of threat Padilla posed.
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