bế quan tỏa cảng 
closed door, harbor policy
thành phố cảng seaport, harbor town, city
Trân Châu Cảng Pearl Harbor
bến cảng wharf, port, harbor
cảng (sea) port, harbor
hải khẩu estuary, mouth of a river, harbor
oa trữ to conceal, to receive, to harbor