Consisting of five times ten.

五十的。

The number which amounts to five times ten, or forty-nine plus one.

五十。

The sign representing it, as 50 or L.

五十之记号(如 50 或 L )。

The numbers from 50 to 59.

从 50 到 59 间的数字。

The years from 50 to 59 in a century or a lifetime.

五十年代；50 几岁。