steady的副词形式是什么

　　The political situation is steadily worsening.

　　政治局势在持续恶化。

　　He looked at her steadily.

　　他凝视着她。

　　The rain was falling steadily.

　　雨不停地下着。

　　The rain fell steadily.

　　雨不紧不慢地下着。

　　His authority is steadily weakening.

　　他的权威日趋减弱。