Sierra Nevada
内华达山脉
Sierra Leone
塞拉利昂
Sierra Club
塞拉俱乐部
We are doing so now," said David Bookbinder, the chief adviser on climate change for the Sierra Club.
我们现在已经在做了。”塞拉俱乐部的首席顾问大卫·布克班德称。
Sierra Nevada
内华达山脉
Sierra Leone
塞拉利昂
Sierra Club
塞拉俱乐部
We are doing so now," said David Bookbinder, the chief adviser on climate change for the Sierra Club.
我们现在已经在做了。”塞拉俱乐部的首席顾问大卫·布克班德称。
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