He was that rarest of statesmen, one whose integrity disarms even his critics.他为人正直,连批评他的人也佩服他三分,在当代政治家中实属罕见....the black-necked crane, one of the rarest species in the world...黑颈鹤，世界最稀有的物种之一The rarest is type AB.最稀少的是AB...
月球绕地球运行的轨道不是浑圆的, 而是椭圆的.The moon doesn't describe a circle round the earth, but rather an ellipse.本文介绍了一种鲜为人知的用直径距离描绘椭圆的方法.This paper introduces a rarely seen method of describing with diametral distance.叶子的形状;椭圆的形状....