The research center is trying to use a flying robot, together with a homing pigeon, to deliver mails.

研究中心正在尝试使用飞行机器人和信鸽一起投递邮件。

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For instance, if a homing pigeon is to navigate with its Sun compass, its clock must be properly set by cues provided by the daylight/darkness cycle.

例如，如果一只信鸽要用它的太阳罗盘进行导航，它必须根据日光/黑暗的循环所提供的线索正确设置时间。

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It is illegal to delay or detain a homing pigeon.

耽搁或扣留传信鸽是违法的。

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