Then he scraped away the dirt, and exposed a pine shingle.接着他刨去泥土, 下面露出一块松木瓦块.They scraped off the barnacles that always encrusted on the ship's hull.他们刮去总是附在船身外面的甲壳动物.She scraped the mud off her boots.她刮掉了靴子上的泥。The...
大脑需要持续供氧。The brain requires a constant supply of oxygen.氧气泡a bubble of oxygen医院中抗甲氧西林金黄色葡萄球菌感染病例不断增长的发生率rising rates of MRSA infections in hospitals...