The Columbia River in the us Northwest lost about 14 percent of its volume from 1948 to 2004, largely because of reduced precipitation and higher water usage in the west.
Every summer, on the West Coast of British Columbia, we see many little Pacific tree frogs perched on the flowers in our garden and enjoying the sun.
每年夏天在不列颠哥伦比亚省的西海岸，我们看到很多小太平洋树蛙栖息在花园里的花朵上，享受着阳光。
3
Nim went from a nice big bohemian, Upper West Side brownstone to a huge mansion in Riverdale that Columbia University owned in the Bronx, where he continues to be taught to use sign language.