Next, open up a command line terminal and type cd followed by a space and the destination directory of the file you've just downloaded (this is normally going to be ~/Desktop for your desktop.

接着，打开一个命令行终端，键入cd+空格+你下载的文件的路径（通常是你主文件夹中的~/Desktop）。

youdao

Control type: normally closed, normally open, double acting.

控制形式：标准常闭、常开、双作用。

youdao

Options include direct acting and diaphragm type operations in a Normally Open or Normally Closed version.

可选包括直接作用和隔膜式常开或常闭版本。

youdao

Forest fragmentation opens the door to invasive species such as the cowbird, a type of blackbird that normally prefers open land, said Bridget Stutchbury, a biologist at York University in Toronto who studies forest songbirds.

WSJ: Northeast drilling boom threatens forest wildlife