qǔ zhī bù jìn , yòng zhī bù jié
limitless supply (of)
inexhaustible
取
qǔ
to take
之
zhī
(possessive particle, literary equivalent of 的[de5])
不
bù
no; not so
尽
jìn
to use up
,
,
用
yòng
to use; to make use of; to employ
竭
jié
to exhaust