This is a problem
一个───One;这───this
One should answer for what he does.───一人做事一人当.
Boats for hire: one shilling an hour.───游船出租: 每小时一先令.
No one could plumb the mystery.───没人能看破这秘密.
We've tried this method for no one knows how many times.───这种方法我们已不知试了多少次.
One of the hostess's duties is to mingle with the guests.───女主人的职责之一是与客人们交际.
Guard the secret with your life, tell it to no one!───你要以生命来保守秘密, 不要告诉任何人.
One minus one is zero.───一减一等于零。
She cursed at one of her servants this morning.───今天早晨她大骂了一个仆人.
Better one suffer, than a nation grieve.
Pick a number from one to twenty.
One car narrowly missed hitting the other one.
One in seven accidents is caused by sleepy drivers.
I for one was sorely disappointed.