term of validity

基本解释

The term of validity of identification papers or residence certificates shall be determined according to the purposes of entry.
身份证件或者居留证件的有效期限，根据入境的事由确定。
The term of validity of the present treaty is twenty years.
本条约有效期为二十年。
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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;
实行生产许可证制度的产品，要有许可证编号、批准日期和有效期限；

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.
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