The fans didn't even turn their backs on me then. They always give me a brilliant reception.
球迷永远不会以背对我的方式招呼我,他们对我很好。
They put tiny tracking devices and cameras on the birds' backs and then followed their movements using global positioning systems.
他们在鸽子背后放置微型跟踪设备和摄像机,然后运用全球定位系统追踪它们的行动。
The scientists spent 10 years studying pigeons. They put tiny tracking devices and cameras on the birds' backs and then followed their movements using global positioning systems.
科学家们花费了10年来研究鸽子。他们在鸽子背后放置微型跟踪设备和摄像机,然后运用全球定位系统追踪它们的行动。
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