They have been bartering wheat for cotton and timber.他们一直用小麦交换棉花和木材。Parliament would be touchy about bartering British soil for ships.用英国国土换取舰只,议会感到为难.Both have separate systems of credits that make bartering easier.他们具有...
霰粒非常的小,可是沉重有分量,既拿脚,又迷眼, 他不能飞快的跑.The heavy snow particles also blinded him , preventing him from running fast.水分子以雨 、 雪 、 雹和霰的形式从大气圈降落到地表.From the atmosphere, water molecules fall upon the Earth's surface as rain, sn...
纯水是中性的，酸碱度为7。Pure water is neutral with a pH of 7.双方已达成协议，在提及对方时使用中性的词语，避免有争议的字眼。Both sides had agreed to use neutral terms in their references to each other, avoiding controversial ones.中子是中性的,比质子略重.Neutron is neutral a...