at a loss; unable to do anything about it; to have no choice[cedict]
我
wǒㄨㄛˇ
I; me; my[cedict]
不得不
bù dé bùㄅㄨˋ ㄉㄜˊ ㄅㄨˋ
have no choice or option but to; cannot but; have to; can't help it; can't avoid[cedict]
把
bǎㄅㄚˇ
bàㄅㄚˋ
to hold; to contain; to grasp; to take hold of; a handle; particle marking the following noun as a direct object; classifier for objects with handle[cedict]