fight tooth and nail 鍥而不捨

fight tooth and nail
繁：鍥而不捨
简：锲而不舍

對於民意分歧大，會否導致未來一年留任議員被迫做得激進一點，回應抗爭派的期望。胡志偉指，政治壓力本身就存在，民主派必須加強自身的戰意和戰鬥力，會繼續鍥而不捨地做「留得低，就要全力以赴」。

民主派整體支持者較多主張離任　胡志偉：距離已經收窄（2020年9月30日）。香港01，取自 https://www.hk01.com/政情/530195/

But Wu signaled that the legislators will not hesitate to fight tooth and nail to achieve their goal of frustrating ‘bad’ government initiatives, saying the gap between tactics used by ‘moderate’ and ‘radical’ pro-democracy forces have been shrinking.

‘Pan-dems and street fighters united against govt’. (2020, September 30). rthk. Retrieved from https://news.rthk.hk/rthk/en/component/k2/1552382-20200930.htm?archive_date=2020-09-30