Anaemia is a condition in which there is a reduced concentration of haemoglobin in the blood.贫血是在血液里血红蛋白的浓度减少的一种病症.The haemoglobin molecule contains only four atoms of iron.血红蛋白分子只含有四个铁原子.Are haemoglobin and hematid red ...
The new traffic rule has come into effect since March.新交通规则自三月份起生效.You should understand the traffic rule by now. You've had it explained often enough.到现在你应该理解这条交通规则了, 已经给你解释得够多了.But please note, you should ride the...