bù dé yǐ ér wéi zhī
to have no other choice
to be the last resort
不
bù
no; not so
得
dé
to obtain
已
yǐ
already
而
ér
and
为
wéi
variant of 為|为[wei2]
之
zhī
(possessive particle, literary equivalent of 的[de5])
