亏

have lost all one's capital

have a deficit of 100 yuan ; lose 100 yuan

I owe you 20 yuan.

dual depletion of qi and blood

The land won't fail people as long as people don't fail the land.

Don't worry; we will not be unfair to you.

Luckily my wife had the key; otherwise I couldn't have entered the house.

Fortunately you came in time; otherwise we would have to put off the whole thing.

You owe it to yourself to say it. / You had the nerve to say so.

For a college student, you ought to know better than that!

When the moon becomes full, it begins to wane.