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1·The period of validity of the agreement has expired.

本协议的有效期已过。《牛津词典》

2·Its period of validity is 12 months.

有效期12个月。

3·All signed plug-ins have a period of validity.

所有签名插件都有一个有效期。

4·What is the period of validity of this L/C?

这张信用证的有效期是多久？

5·The period of validity of Yinju Granule was 12 months.

银菊颗粒的有效期为12个月。

6·What is the period of validity of the letter of credit?

信用证的有效期是多长时间？

7·Its period of validity should be available for six months at least.

护照的有效使用期至少为六个月。

8·The period of validity for each renewal of registration shall be ten years.

每次续展注册的有效期为十年。

9·Other visas (issued during the past three years) and their period of validity.

过去三年内曾有其他签证及其效期。

10·The period of validity for temporary custody of shares shall not exceed one year.

股份临时保管的有效期不得超过一年。

有效期

1·All signed plug-ins have a period of validity.

所有签名插件都有一个有效期。

2·Fare change: airlines, space, period of validity, back Meal Service and space limitations.

票价变化：航空公司、舱位、有效期、退改签和舱位限制。

3·The period of validity is one year.

此卡有效期为一年。

4·Period of validity: Three years.

有效期：三年。