I felt loath to sully the gleaming brass knocker by handling it.我不愿意伸手去抓那闪亮的黄铜门环，怕把它弄脏。Number 30 has a red door and a brass knocker.30号有一扇红门和一幅铜门环.The knocker is oblong in shape, and of the kind our ancestors called " ja...
High packing density greatly impedes the cooling of the array.高存贮密度很不利于阵列的散热.The inflexibility of the country's labor market seriously impedes its economic recovery.该国劳工市场缺乏灵活性,这严重阻碍了它的经济恢复.What impedes your making ...