Enclosed herewith is a twenty - fen stamp.随函附上20分邮票一张.For the payments I inclose herewith P . O . money order.为支付货款,同函附上邮局汇票.Please find two samples enclosed herewith.寄上样品两种,请查收.I return herewith your papers.我随信退还你的文件。I ...
Our bombers have knocked out the mobile launchers.我们的轰炸机摧毁了移动火箭发射台。He searched the skies for enemy bombers.他在空中搜寻敌军轰炸机。The Royal Airforce sill remained dangerously short of bombers.英国皇家空军仍未脱离极为缺乏轰炸机的危境....
绝缘体的原子把电子抓得很牢.The atoms of an insulator hold their electrons very tight.晶体可以是绝缘体, 半导体, 或导体.Crystals may be insulators, semiconductors, or conductors.由绝缘体隔开任何两个导体就组成电容器.Any two conductors separated by an insulator are sai...