N2 — outside your level filter
work + do it for the whole stretch without breaking off
hataraki toosu
do it for the whole stretch without breaking off; hold to it to the end
山道を八時間、休まずに歩き通した。
yamamichi o hachijikan, yasumazu ni arukitooshita.
I walked the mountain path for eight hours straight, without a rest. neutral
彼は取り調べで、何も知らないと言い通した。
kare wa torishirabe de, nani mo shiranai to iitooshita.
Under questioning he stuck to it that he knew nothing. neutral