有效期的英文翻譯

indate

useful life

expiry date

effect duration

term of validity

effective period

period of validity

參考例句：

Expiry Date證書有效期

The embassy refused to renew their temporary travel documents.大使館不同意延長他們臨時旅行證件的.有效期。

Review the expiry date (use them within a year or two of the date they were manufactured).檢查有效期限（生產後一至兩年內為有效期）。

The ticket is available for three days.這張票有效期三天。

They applied for an extension to their visas.他們申請延長簽證有效期。

Initially the contract will be in effect for 3 years.最初契約的有效期為三年。

He asked for an extension of his visa.他申請延長簽證有效期。

The LC is only valid until April the eighth.信用證的有效期只到四月八號。

The validity of the L/C will be extended to 30th August.信用證的有效期將延至8月30日。

This membership fee lasts for 12 months and is non-refundable.這會員費有效期12個月中途不退款。

indate是什麼意思：

有效期

useful是什麼意思：

adj. 有用的，有益的

It is used as a reflexive.它被作為反身代詞使用。

That was a balk to us.那對我們是個挫折。

They help us to be maximal encouraging to us.他們來幫助我們對我們是個極大的鼓舞。