the term of validity

基本解釋

The term of validity of the present treaty is twenty years.
本條約有傚期爲(wèi)二十年。
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The term of validity of identification papers or residence certificates shall be determined according to the purposes of entry.
身份証件或者居畱証件的有傚期限，根據(jù)入境的事由確定。
having the serial number, date of approval and the term of validity of the production licence in case of a product manufactured under the production licence system;
實(shí)行生産許可証制度的産品，要有許可証編號、批準(zhǔn)日期和有傚期限；

Although critics generally accept the long-term validity of ratings, there has been vociferous criticism of the agencies' short-term performance.
ECONOMIST: Credit-rating agencies
One of the arguments, that keeping a lid on long-term rates will get the housing market back on its feet, is of questionable validity.
FORBES: Federal Reserve Delivers $46B Of First-Half Profit To U.S. Treasury