Toughening agent
[化] 增韧剂
🧩 词语组成解析
v. （使某物[人]）坚韧, 坚强, 强硬( toughen的现在分词 )
🗣️ 情景例句
He really likes to play the field.
他不喜欢做出承诺。
He likes playing the eletronic organ.
他喜欢弹电子琴。
They were not fighting men, and their harp was their passport.
他们不是作战人员，竖琴就是他们的通行证。