红外探测器有多种用途。Infrared detectors have many uses.报告主张所有的建筑物都应安装烟火探测器.The report advocated that all buildings be fitted with smoke detectors.它的圆环是从地球上用望远镜发现的，但是太空探测器后来又发现了围绕其他一些星球的壮观的圆环。Its rings were discovered by telescope ...
那里每年秋天有2,000头灰色小海豹出生。Two thousand grey seal pups are born there every autumn.一场反对那些残酷屠杀小海豹的猎手的运动正在展开.There is a campaign against those hunters who mercilessly slaughter baby seals.虎鲸猛烈甩动着嘴里的小海豹,溅起漫天水花.The killer flung th...
整数或字符串等基元类.A primitive class as integer or string.但是对于这些,我们并不需要元类.But we do not need metaclasses for that.然而在这次介绍中,我们将避免元类, 由于它们弊大于利.We will avoid metaclasses in this presentation, however, since they bring more problems...