激流群落的

There's plenty of bull in the fish story, as an angler and bison share a stretch of Wyoming's Yellowstone River. Flowing waters like rivers and streams are called lotic ecosystems; standing water like lakes and ponds are lentic.

吹牛的故事里有很多的牛人，但是如上图美国怀俄明洲黄石国家公园中的垂钓者和野牛，此处流动的水就象江河俗称激流群落生态系统，而静止的水却如池塘和湖水般宁谧。

Means the parent directory, so this command means to execute "toolchain.sh," which is in the current directory.

代表父目录，所以这个命令就是执行当前目录下的"toolchain.sh"。

Yes,In fact,I'm on our city ream.

是的。事实上我是我们市队的。