ineffectual /ˌɪnɪˈfɛktʃʊəl/ TEM8

• 1. 

  ADJ If someone or something is ineffectual, they fail to do what they are expected to do or are trying to do. 无能的; 无效的

  例：

  The mayor had become ineffectual in the struggle to clamp down on drugs.

  该市长在打击毒品的斗争中行动不力。

• 2. 

  ineffectually ADV 无效地

  例：

  Her voice trailed off ineffectually.

  她的声音渐渐微弱得听不见了。