That IS a sentence.
Yes, the sentence "life is a bowl of cherries" is a metaphorical idiom. It is a metaphor comparing life to a bowl of cherries, suggesting that life is sweet and pleasant.
Without a job, it's a dog's life.
"Larger than life" is an idiom, so there isn't an idiom for it.
"Her slavish devotion to her job ruled her life." "A slavish copy of the original."
The fighter knew how to take a punch. He had survived many challenges in life and had learned how to take a punch.
The element carbon is essential for life on Earth.
If you take a leaf (page) out of someone's book, you copy something that they did or take it as an example for your own life.
Life Is Sometimes Hard
The idiom, "spice of life", means that you can do something to make your life more exciting. Do something that's daring, challenging, fun; something that's worth living for.
This idiom has nearly reached cliche status. It is often offered in an eulogy as an expression that someone has died early (and usually expectantly) in life and was about to do great things with his or her life.
It means to rejuvenate, revitalize, or to make something more alive. It is related to the idiom, "A fresh breath of air."
This idiom means that wisdom comes with age and experience. It suggests that as people grow older, they gain valuable knowledge and insights that can be attributed to their life experiences. The "crown of the aged" symbolizes the wisdom that comes with aging.