(1)work out锻炼身体：
He works out in the gym two or three times a week.
他每周在健身房锻炼两三次。
Every time you work out, you should begin and end with a few stretches.
每次健身的前后，都应该做些伸展的动作。
(2)work out事情发生：
Let's hope this new job works out well for him.
希望这项新工作会非常适合他。
We broke up because things didn't work out between us.
我们分手了，因为我们之间没戏。
(3)work out解决，起作用：
Things will work out.
一切都会顺利的。
I'm sure it'll work out.
别担心，总会有办法的。
Don't worry. I'm sure we can work it out.
别担心. 我保证我们有办法解决.
(4)work out结果是;算下来：
These figures work out differently each time I add them.
我每次把这些数字相加得出的结果都不一样。
The safe load for a truck of this size works out at nearly 20 tons.
这种大小的卡车的安全载重量算出来是将近20吨。
In fact the trip worked out cheaper than we'd expected.
实际上这次旅行花的钱比我们预计的要少。