Stiffeners
n. 加强剂（stiffener的复数）
🗣️ 情景例句
He couldn't teach such dull children.
他教不了这么笨的孩子。
Will you speak up, please?
请你大声一点好吗？
Good morning, Mr Coal. I hear that you are one of the best detectives in the capital.
早上好，科尔先生。我听说你是首都最优秀的侦探之一。