In 1987 when Discovery Channel's now-famous Shark Week series debuted, researchers had few means of studying the animals beyond underwater cages and crude acoustic tracking devices.
当1987年《探索》频道第一次播出著名的《鲨鱼周》系列时，研究人员还在使用防鲨笼和简陋的声音追踪设备。
In 1987 when Discovery Channel's now-famous Shark Week series debuted, researchers had few means of studying the animals beyond underwater cages and crude acoustic tracking devices.
当1987年《探索》频道第一次播出著名的《鲨鱼周》系列时，研究人员还在使用防鲨笼和简陋的声音追踪设备。
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