fumbling

His fumbling attempts to fix the computer only made it worse.

用法提示：fumbling 作为形容词，修饰 attempts，表示笨拙的、不熟练的尝试。

The new waiter gave a fumbling performance, dropping plates and spilling drinks.

用法提示：fumbling 作形容词修饰 performance，表示动作不灵巧、缺乏技能的表现。

Her fumbling speech showed how nervous she was during the presentation.

用法提示：fumbling 形容 speech，指说话不流畅、犹豫不决，显示紧张或不熟练。