原书拼音: caai2 gong3 sin2:jaai2 gong3 sin2
馬戲團雜技嘅一種,表演者會喺凌空嘅#鋼線 上行走 (tightrope walking; a circus trick where the performer walks along a thin wire at a great height)
動詞做一啲極度危險、風險極大、稍有不慎就會後果不堪設想嘅嘢 (to do something extremely risky and dangerous)
用例
你幫公司做假數,同踩鋼線冇分別。
nei5 bong1 gung1 si1 zou6 gaa2 sou3, tung4 caai2 gong3 sin2 mou5 fan1 bit6.
You are walking on a tightrope in helping the company falsify its accounts.