The lessons learned at the cost of blood helped to sober us.血的教训使我们的头脑清醒了.We must cherish experience acquired at the cost of blood.我们必须珍惜用鲜血换来的经验.He rescued the boy from drowning at the cost of his own life.他救这小孩免于淹死却牺牲了...
Why aren't all lenses supplied with a lens hood?为什么不给所有的镜头都配上遮光罩呢？The autoexposure button is awkwardly placed under the lens release button.自动曝光按钮安装在镜头脱卸按钮下面，十分不便。Your camcorder should have these basic features: aut...