"。我觉得还是左上那个好，坐姿优美，神情自若，右下方这个看起来比较凶，不太好相处。这些进步将节省20%的燃料和额外的有效载荷或航程能力。 I am not the person would like to share this to who I know as I understand everyone are busy and I am not sure if they can relate to how I feel。"今天是星期二。"。