s. lacking in or deprived of strength or power
s. unable to function; without help
s. unable to manage independently
a. 无助的, 无能为力的, 无依无靠的
1. She felt helpless when she saw the accident happen.
当她看到事故发生时，她感到无助。
2. The child was helpless without his parents around.
孩子在没有父母陪伴时感到无助。
3. He looked helpless as he tried to solve the puzzle.
他在试图解这个谜题时显得无助。