fifty

n.

五十个人；五十岁；五十年代；编号为五十的东西

num.

五十；五十个；

adj.

五十的；五十个的；许多的；

复数：fifties

1. He fathered a daughter at the age of fifty.
   他五十岁时生下一个女儿。
2. Black smog reduced visibility to about fifty yards.
   黑色的烟雾使能见度降到大约五十码左右。

Congestive heart failure: fifty years of progress.
One thousand fifty-six hepatectomies without mortality in 8 years.
A simple method for estimating fifty percent end points
Fifty Years of Regional Inequality in China: a Journey Through Central Planning, Reform, and Openness
Six hundred fifty consecutive pancreaticoduodenectomies in the 1990s: pathology, complications, and outcomes.
Six hundred fifty consecutive pancreaticoduodenectomies in the 1990s - Pathology, complications, and outcomes - Discussion
Stabilization wedges: Solving the climate problem for the next fifty years with current technologies
INFLUENZA OCCURRING IN PREGNANT WOMEN: A STATISTICAL STUDY OF THIRTEEN HUNDRED AND FIFTY CASES
Pathologic observations in systemic sclerosis (scleroderma). A study of fifty-eight autopsy cases and fifty-eight matched controls.
Osteoarthritic changes in canine articular cartilage, subchondral bone, and synovium fifty-four months after transection of the ante...