天長地久的英文：
[Literal Meaning]
the sky/long-lasting/the earth/long-lasting
as long-lasting as the sky and the earth
[解釋]
久：長久。跟天和地一樣長久。形容時間很長。
[Explanation]
to be enduring as the universe
[例子]
每個人都向往著天長地久的愛情，可是很少有人願意改變自己適應對方。
[Example]
Everybody longs for an everlasting love, but few people are willing to change to adapt to the other.
[英文等價詞]
as eternal and unchanging as the universe
參考例句：
Our friendship is everlasting and unchanging.
我們的`友誼天長地久。
I love you forever and always will
我愛你天長地久
our friendship last forever.
願我們的友誼天長地久
Sincere friendship is everlasting and unchanging.
真摯的友誼天長地久。
A man should keep his friendship in constant repair.--Samuel Johnaon, British writer
只有經常“澆灌”,方能保持友誼天長地久。英國作家約翰遜
