By using bigger and better equipped mother ships, pirates can often stay at sea for more than a month at a time, launching a series of raids.
通过使用体积更大、装备更好的母船，海盗在海上可以生活几个月，实施多次抢劫。
2
Objective To simulate the water environment during floating status after astronauts returned and splashed down on the sea because of space capsule emergency in the launching stage.
目的模拟载人飞船上升段应急返回在海上溅落，航天员处于水上漂浮状态时的海面环境。
3
The reason for both launching and recovering bow-first is that, in a heavy sea, reversing manoeuvres onto a trailer are too hazardous to be contemplated.