Stiffeners
n. 加强剂（stiffener的复数）
🗣️ 情景例句
That's great.
真棒！
That's what I guessed.
跟我猜的一样。
He can get up for about two hours each day, but you must keep the room warm.
他每天可以起来两个小时，但您必须保持房间温暖。