永 (yǒng): eternal; forever; perpetual; lasting

At their wedding, they made a promise, hoping that their love would last forever and their hearts would never change.

This monument is to commemorate the soldiers who died in the war; their heroic deeds will forever be recorded in history.

Although we have separated, I will always regard you as my best friend, and this friendship will forever remain in my heart.

Scientists continuously explore the mysteries of the universe; their discoveries will forever change our understanding of the world.

This photo captures our happiest times; every time I see it, I hope that moment can forever stay in my heart.