渥太华

例句：

1. 1. Ottawa is the capital of Canada.
   渥太华是加拿大的首都。
2. 2. The Canadian government is based in Ottawa.
   加拿大政府设在渥太华。
3. 3. Ottawa is known for its beautiful gardens and parks.
   渥太华以其美丽的花园和公园而闻名。