helpless
adj
1 unable to act without help; needing the help of others 不能自立的; 需要他人帮助的
a helpless baby, invalid, drunkard 要人照顾的婴儿、 伤残者、 喝醉的人
be helpless with laughter 笑得全身无力.
2 without help; defenceless 无助的; 无保护的
Without their weapons they were helpless. 他们没有武器便不能自卫.