长久 (cháng jiǔ): เวลานาน

They have been married for thirty years and their relationship is still very good, which shows that their marriage can last a long time.

If both sides can benefit from this cooperation model, it is possible to maintain it for a long time.

For long-term health, you should stick to exercising rather than just seeking momentary comfort.

Whether the peaceful relationship between these two countries can last long depends on whether they are willing to continue dialogue.

Learning a foreign language requires long-term effort; you can't expect to master it completely in just a few months.