Russia has already planted a flag on the sea bed at the North pole while Canada has increased funding for cold weather training centres and new patrol vessels
俄罗斯已经在北极海床插下标记，加拿大在严酷天气培训中心以及和新的巡逻舰上增加了资金投入。
2
Today's usage of drones in the U. S. remains limited to the law enforcement, border patrol, firefighting and weather or scientific research.
今天在美国无人驾驶飞机的使用仍然有限，以执法，边境巡逻，消防，气象，科研。
3
Due to the bad weather, the German navy cancelled its usual patrol of the English Channel.