The product, though unique at the time, was expensive and heavy; besides, some of its most important features didn't work properly.
该产品虽然在当时是独一无二的，但是价格昂贵，机身沉重；此外，它最重要一些功能也不能正常运行。
The BBD Mattress Overlay is a highly versatile product. It has many unique features aimed at helping to preserve skin health.
BBD床垫是一种多用途的产品。它具有许多独一无二的特点旨在帮助保护皮肤健康。
The crane's metal structure product is different from general machine parts for its unique features.
起重机金属结构产品不同于一般的机械零部件，在产品特征上有其独有的特点。
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