Word: 一丝 (yìsī) Traditional: 一絲 Example sentences using 一丝 3 sentences, showing page 1 of 1. 他脸上露出一丝苦笑。 Tā liǎnshàng lùchū yìsī kǔxiào. A faint bitter smile appeared on his face. 他脸上露出一丝邪恶的笑容。 Tā liǎnshàng lùchū yìsī xié'è de xiàoróng. A sinister smile appeared on his face. 她脸上浮现出一丝笑容。 Tā liǎnshàng fúxiàn chū yìsī xiàoróng. A faint smile appeared on her face.