(Tw) safe seat (in an election); stronghold (for a political party or candidate); a district in which a majority of voters consistently votes for a particular party or candidate
(Tw) triplicate uniform invoice, a type of receipt 统一发票[tǒng yī fā piào] issued to a business or organization with a VAT identification number or 统一编号[tǒng yī biān hào]