strengthener
n. 助力器
例句
The cardboard backing was just a strengthener.
这个纸板衬背就是一个助力器。
This paper had a study on the Ca strengthener about soy sauce.
本文用几种钙强化剂对酱油进行了钙强化研究。
Sleep, the kind strengthener enables us to face the days task with renewed heart!
睡眠这亲切的强身剂，它使我们能够以焕然一新的精神迎接一天的操劳！
