faltering  
adjective uk/ˈfɒl.tər.ɪŋ/ us/ˈfɑːl.tɚ.ɪŋ/
  (FAILING)      
  衰落的;蹒跚的
losing strength or purpose and stopping, or almost stopping
  This legislation is designed to stimulate the faltering economy. 这项立法旨在刺激衰退的经济。 
 She spoke in a faltering voice that eventually gave way to sobs. 她用颤抖的声音说话,最终转变为啜泣。 
 - More examples
 - She led a faltering political party to defeat.
 - He gave a faltering performance in the first presidential debate.
 - the country's faltering health and education systems
 
  (OF MOVEMENT)      
 蹒跚而行的,摇摇晃晃的,踉踉跄跄的
moving awkwardly as if you might fall
  She took a few faltering steps. 她摇摇晃晃地走了几步。 
 There were many faltering runners in the final miles of the race. 在比赛的最后几英里,有许多踉踉跄跄往前跑的选手。 
 See: falter
 - More examples
 - Her steps have become gradually more faltering.
 - He put out his faltering arm toward her.
 - This was where I took my first faltering dance steps.