目前有人认为世界各地使用的“塞格威”有8万辆 ，其中有许多是供警察驾驶它们在公园一类步行的地区巡逻。
There are now thought to be 80, 000 in use worldwide, many of them by police forces patrolling pedestrian zones such as parks.
尽管有人建议使用武器，但船运业反对在船上配备武装安保，其原因是船员在交火中有丧命的危险。
Despite some calls to arms, the shipping industry is against stationing armed security guards on board, because of the risk that crews will be caught up in a lethal firefight.
尽管有人建议使用武器，但船运业反对在船上配备武装安保，其原因是船员在交火中有丧命的危险。
Despite some calls to arms, the shipping industry is against stationing armed security guards on board, because of the risk that crews will be caught up in a lethal firefight.
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