Among the clothes we sell,some helmets are made of foam,some are made of sponge.Whenever the product is labeled "contains sponge",it's made of sponge.The ones without the label are made of foam.
你这句中文语法似乎有点问题,我只是直译了.
英语翻译我们卖的衣服中有些头盔是泡沫做的,有些是海绵做的.凡是商品标题上写有海绵的,那就是海绵做的.没有写有海绵的,则是