“绷着脸”的英语可以翻译为：not have a word to throw at a dog ...

萨拉走上前来，紧绷着脸，怒气冲冲。Sarah came forward with a tight and angry face.“你怎么会有那种想法呢？”她绷着脸反问道。"Whatever gives you that idea?" she replied straight-faced.“ 那又怎么样 呢 ? ” 汤姆绷着脸说.'so what? " Tom said sullenly....