one-twelfth
n. 十二分之一
例句与用法：
If you do not mind wait, Mr. Smith will be free in about twenty minutes' time.
如果您能等一下，史密斯先生20分钟后就有空了。
I suppose I can't complain; I am eighty years old and sound in health and mind. I've had a good innings.
我想我没什么要抱怨的，我已80高龄，身心健康，事事如意。