on end ぶっ続けで

on end が時間の観念を表すとき、days on end, hours on end, weeks on end のように時間を示す単語と一緒に使われます。 1:45 but crossing the border illegally means a lot more than just waiting. it means walking for days on end under the sun over some rugged terrain. メキシコ人にとって不法越境とは荒れた大地を何日間もぶっ続けで歩くことでもある。

Why Walls Won't Secure The U.S.–Mexico Border

https://www.youtube.com/watch?v=CZkL86E34Jk  0:49 this view from the air, people trapped in their cars for hours on end. 何時間もぶっ続けで 　
LA Bridge Collapse Caught on Tape

https://www.youtube.com/watch?v=vW_bt2zmLf4  0:14 Cosby is a virtual recluse holed up for weeks on end at the mansion. 数週間もぶっ続けで
Where Bill Cosby Has Been Hiding Out Since Sex Scandal Emerged

参考リンク
http://bridge-english.blogspot.jp/2014/09/in-row.html  in a row

練習問題解答
a-5796 hours on end 時間の複数形 + on end が公式
a-5855 for months on end
a-6039 hours on end
a-8066 for days on end
a-9908 for several days on end