慣例
convention; precedents sub silentio[拉];(usual)practice;usage;precedent（用于法律）
根據(jù)～，主賓坐在主人的右邊。According to usage,the guest of honour sits on the right side of the host./國際～ international practice/外交～diplomatic usage (or practice)/行業(yè)交易～usage of trade /援引～ invoke(or cite)a precedent/作戰(zhàn)～usage of warfare/～法code of practice;conventional law