Word: 兴奋剂 (xīngfènjì) Traditional: 興奮劑 兴奋剂 dictionary entry xīngfènjì stimulant; doping (in athletics) Full dictionary entry for 兴奋剂 Example sentences using 兴奋剂 2 sentences, showing page 1 of 1. 咖啡里的咖啡因也是一种兴奋剂。 Kāfēi lǐ de kāfēiyīn yě shì yìzhǒng xīngfènjì. The caffeine in coffee is also a kind of stimulant. 熬夜时别靠兴奋剂撑着。 Áoyè shí bié kào xīngfènjì chēngzhe. Don't rely on stimulants to get you through a late night.