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1·The backs of vertebrates evolved as a kind of horizontal pole under which guts were slung.

进化的脊椎动物的背部就像一个水平杆，内脏就悬挂在这水平杆上。

2·To fill this niche, the CAMCOPTER S-100 now can carry up to 80 kg (176 lbs) of external under-slung load.

为了满足需求，CAMCOPTER S-100无人机现在可以采用外部副吊挂携带80公斤（176磅）货物。

3·The latest upgrades provide external under-slung load capability, extended range/endurance and increased electrical payload power output.

升级的最新型无人机提供外部副吊挂负载能力，扩展范围和耐力，增加有效载荷的功率输出。