永久

永久

"永久" means "eternity" or "permanence."

In this sentence, '永久 (eternal)' is used to describe the enduring nature of love, indicating that it lasts indefinitely.

永久に続く愛を誓います。

I vow eternal love.

Here, '永久 (permanent)' is applied to preservation, conveying the idea that the building will be maintained indefinitely without end.

この建物は永久保存される予定です。

This building is scheduled for permanent preservation.

In this usage, '永久 (perpetual)' refers to the constant and endless operation of such a theoretical machine.

科学者たちは永久機関の可能性を研究しています。

Scientists are researching the possibility of a perpetual motion machine.