据2008年官方公布的没有连字符的统计，如今沃尔玛已是美国最大的私人雇主。

Today Walmart (which officially went hyphenless in 2008) is America’s largest private employer.

youdao

“Long run”(没有连字符)是个名词，“Long - run”(由连字符)是个形容词。

O "Long run" (without a hyphen) is a noun. "Long-run" (with a hyphen) is an adjective.

youdao

应用一个默认的值，例如一个连字符(-)，以显示当前没有任何值的属性。

Apply a default value, for example a hyphen (-), to make the attributes display that they are currently holding no value.

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