「一刀兩斷」

(pos:語句)
<explanation>
yue:用一刀將物體斬成兩截；比喻徹底分開，斷絕來往（尤其指一段關係）
eng:literally, to divide into two pieces by one cut; figuratively, to make a clean break; to end an relationship
<eg>
yue:由今日起，我同你一刀兩斷。 (jau4 gam1 jat6 hei2, ngo5 tung4 nei5 jat1 dou1 loeng5 dyun6.)
eng:From now on, our relationship is over.