30 percent of reptiles, birds, and fish are currently threatened with extinction.目前，30%的爬行动物、鸟类和鱼类面临灭绝的危险。All reptiles have to slough their skin to grow.所有爬行动物生长过程中都要蜕皮。Snakes and crocodiles are both reptiles.蛇和鳄鱼都是爬行动物....
这家公司生产一系列的新型轻便自行车。The company manufactures a range of innovative light-weight cycles.海关官员们对这种设备作出了一系列互相矛盾的陈述。Customs officials have made a series of contradictory statements about the equipment.一系列技术问题延误了新产品的上市。A series ...
It is characterized by abstractness, objectivity, guidance, normality, creativeness and logicalness.抽象性 、 客观性 、 指导性 、 规范性 、 创造性和逻辑性是其主要特征.Mathematics is an important tool science, which has higher abstractness compared w...
It's a science in that it can be measured by results and is subject to methodological analysis.说它是科学,因为它可以通过结果来衡量,并须经方法论来分析.Much of this research was also plagued by methodological problems theoretical ambiguities.这...
We have a beautiful city and we pray it stays that way.我们的城市很美丽，但愿它能保持下去。And what, pray, do you buy and sell, Major?梅杰，请问，你都买卖些什么？One can only pray that the team's manager learns something from it.大家也只能希冀球队教练从中汲取教训。...