“有效期”的英语可以翻译为：term of validity，period of validity ...

在保单有效期内，所缴纳的保险费是有保障的。Premiums are guaranteed throughout the term of the policy.本协议的有效期已过。The period of validity of the agreement has expired.这份保证书有效期为一年.This guarantee is valid for one year....

“有效期”的拼音为：yǒu xiào qī...