蛙类从不喝水, 它们通过渗透压的调节,从周围环境中吸收水分.Frogs never drink. They absorb water from their surroundings through osmosis.另外, 布劳斯汀还强调, 蛙类还是新型药物的重要来源.And, Blaustein noted, frogs are also important sources of new medicines.蛙类总是令人觉得很严肃的样子...
The gala evening was attended by royalty and politicians.王室成员和政坛要人参加了这个晚会。The Queen attended a gala concert at the Royal Festival Hall.女王出席了在皇家音乐厅举行的音乐盛会.Christmas is a gala day.圣诞节是个喜庆的日子....