1. life
That's life.
I wish I could care more about my grades but it seems that, at a certain point of my life, I decided they wouldn't be so important anymore.
If you go to that supermarket, you can buy most things you use in your daily life.
Pizza is the kind of food that fits into today's life style.
Life is like riding a bicycle. To keep your balance you must keep moving.
I sometimes wish I could live a quiet retired sort of life but I doubt I could stand it for more than a few days.
Mary's sickness does not stop her from enjoying life.
You should always spend time doing things that help your children get ahead in life.
She wished for a more relaxing life, but that was impossible under the circumstances.
Making light of cavities can be a matter of life and death.
In everyday life we have many obligations and responsibilities.
Don't be so glum about it. Life has its ups and downs.
People I admire most are those who do not see life in terms of power.
Old homes, especially traditional Japanese ones, can be damp and unfriendly to modern life.
If you drive with anything less than extreme caution, you're risking your life.
2. lifetime
A lifetime is short, but feels long.
holiday of a lifetime
I cover my lifetime here, you know?
It will take you a whole lifetime to understand a crank like him.
Tatoeba: We've got more sentences than your mom could ever say in her lifetime.
The most instinctive act of nearly every creature is to protect its young, and with humans, this response persists for a lifetime.
Women in their hearts think that men are intended to earn money so that they may spend it, if possible during their husband's lifetime, but at any rate after his death.
You're very lucky you know! A such thing happen only once in a lifetime.
A normal person might spend a lifetime at it and still not succeed but faced with a determined Ren it was not greatly different from a normal cylinder lock.
There's a saying, "once in a life-time event," and that's just what this is.
It is a matter of common knowledge that a man of genius is seldom successful in his own lifetime.
I am determined to spend my lifetime pursuing my ideals.
In my grandmother's lifetime, both telephones and computers have become commonplace.
For even as we celebrate tonight, we know the challenges that tomorrow will bring are the greatest of our lifetime — two wars, a planet in peril, the worst financial crisis in a century.
Each of you must work hard for a lifetime, and only then will you be able to maintain a relationship.