1, valuable: valuable, precious and valuable.
2. priceless: priceless, precious and priceless.
3. priceless: incalculable, very precious
Worthless: worthless, useless
Worthless: worthless, useless
valuable
Many of our teachers also have valuable academic ties with Heidelberg University?
Many of our teachers also maintain beneficial academic ties with Heidelberg University.
Just because a camera is old doesn't mean it is valuable. ?
Old cameras are not necessarily valuable.
If you decide to put on your own makeup, here are some valuable suggestions that will make you look your best?
If you decide to make up yourself, here are some useful suggestions to help you look your best.
This experience is very valuable. ?
This experience is very valuable.
We bought some valuable jewels. ?
We bought some valuable jewels.
invaluable/ priceless
Over the past year, I have gained valuable experience?
During that year, I was fortunate to gain very valuable experience.
This research should be very valuable in linguistic research?
The importance of this research in the field of linguistic research should be confirmed.
Their advice was very valuable to me at that stage of my work. ?
Their suggestions are of great value to my work at that stage.
This book is a very useful help for literature teachers?
This book is very helpful to teachers who teach literature.
Video has become an invaluable teaching tool?
Video recording has become a very useful teaching method.
invaluable/ priceless
1, they are priceless, unique and irreplaceable. ?
They are unique and irreplaceable priceless treasures.
They are priceless records of a short period in British history?
They are extremely precious records of a short period in British history.
The influence of people like David York will be priceless. ?
People like David York can have a very positive influence.
The house is full of priceless furniture and works of art?
The house is full of expensive furniture and works of art.
Works of art and priceless historical records were ruthlessly destroyed. ?
Works of art and precious historical materials were ruthlessly destroyed.