东挖西掘后留下了一片废弃的矿坑。All that digging had left a network of abandoned mines and tunnels.他们在一排废弃火炮旁停了下来。They stopped beside a battery of abandoned guns.矿井废弃了。The mine was a dud....
MFM is an effective method to study magnetic domains and research magnetic materials.本文利用磁力显微镜研究纳米尺度磁畴的检测方法.Spacers make your child's inhaler easier to use and more effective.储药罐可以简化孩子用药,因此更为有效.Recent studies sugges...