The medieval town was fortified with a high wall and a deep moat.这座中世纪的城市用高墙深沟来加强防御.A fire on the city gate brings disaster to the fish in the moat.城门失火，殃及池鱼。Boys in the boat bought buoys in the moat.船里的男孩买了护城河里的浮筒.The c...
It's quite important to gain the ability to cope successfully with corrosive atmospheres and particles.很重要的是获得能够成功地克服气体和粒子腐蚀的能力.The generation of aerosols in polluted atmospheres has been investigated in several exp...
The other children taunted him with nicknames.其他的孩子用绰号取笑他.Babbs, however , did not believe in nicknames and sternly called the President " Franklin. "可是, 巴布斯不喜欢叫绰号,死死板板地称呼总统 “ 富兰克林. ”He tried to amuse her by calling her ...