"the cardboard backing was just a strengthener"
同义词： reinforcement
以上来源于: WordNet
The influences of added kinds of food strengtheners on the quality of fermented soybean milk were compared.
对比研究了几种食品强化剂对发酵豆乳质量的影响。
Possibly because of the numerous calcium enriched nail strengtheners on the market, there is a widespread belief that calcium deficiency causes leukonychia.
也许因为市面上有很多卖加钙的指甲增强剂，所以很多人都认为缺钙会导致白甲病。
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