緊急事態宣言

Excite翻訳: Emergency declaration
＠nifty翻訳: Emergency warning
Babel Fish: Emergency declaration
Google翻訳: Emergency Declaration
Yahoo!翻訳: Emergency declaration
OCN翻訳: Emergency declaration
Windows Live Translator: Emergency situation Declaration

Summary:
Similar expressions are produced with no strange words.

Reverse Translation)
Excite翻訳: 非常事態宣言
＠nifty翻訳: 非常警報
Babel Fish: 緊急の宣言
Google翻訳: 非常事態宣言
Yahoo!翻訳: 非常事態宣言
OCN翻訳: 緊急事態宣言
Windows Live Translator: 緊急事態宣言

Summary:
Although @nifty has a different nuance and Babel Fish describes it in an easier way,
all of the outputs make sense, which is probably for the first time in this blog.