关于厌食的起因存在颇多争论。The causes of anorexia are much debated.以腐肉为食的乌鸦crows feeding on carrion经常看到一只猎食的老虎在村子周围悄悄走动.A marauding tiger was often seen prowling around the village....
短期内, 那些变异体就会在以后的爆发中起主导地位.In short order, those strains become dominant in the next outbreak.而一旦分离出变异体, 对应的突变基因就可以鉴定出来了.Once mutants have been isolated, the mutated gene can be molecularly identified.果胶是由半乳糖变异体和葡萄糖变异体角素构成...
It would be uneconomic to try and repair it...花钱修理不合算。...the closure of uneconomic factories...关闭效益差的工厂You feel that it's uneconomic to insist that people work together in groups. Why is this?...你觉得要求大家分组工作不划算,这是为什么...