from one end to the other
从一端到另一端
To make plans is one thing, but to carry them out is another.
制订计划是一回事，执行计划则是另一回事。
The one thing you have to do is to apologize to him.
你唯一要做的就是向他道歉。
one beautiful afternoon
某个晴朗的午后
teach one-on-one / one-to-one
一对一教学
I want a car, but I can’t afford to buy one.
我想要辆车，但又买不起。
Here are some oranges. Do you want big ones or small ones?
这儿有些橘子，你要大的还是小的?
To be happy, one must keep busy and think about positive things.
想要快乐，就必须忙碌起来并且想想积极的事情。
One after another, people stood up and shared their own stories.
人们一个接一个地站了起来，分享自己的故事。
They gave presents to one another at the graduation ceremony.
毕业典礼上他们互赠礼物。
As the bell rang, the students went out one by one.
铃声响了，学生们鱼贯而出。