It is also possible to design hulls that include air-trapping recesses a couple of metres deep .
同样还可以设计一种携带有长度在几米左右的锁气凹槽的船体。
This pod could help reopen orbits that are currently inaccessible to future spacecraft due to the amount of shredded metal and empty hulls of dead satellites floating around .
It involves picking a route around hidden ice currents to avoid enormous pressures capable of mangling the hulls of most vessels .
它还包括选择一条隐藏冰流的路线，避免会破坏大多数船体的巨大压力。
Programming robots to scan hulls would be relatively easy if limpet mines were still as large as watermelons .
如果吸附式水雷仍然像西瓜那么大，编程机器人扫描船体的任务相对来说是很容易的。
Countries that manage antarctica are calling for limits on the number of tourist ships , for fortified hulls that can withstand sea ice and for a ban on the use of so-called heavy oils .
