Note: there is a space before the hyphen but not one after the r.(注：有一个空间之前，连字号，而不是一后r。)
The second tar reads an archive from stdin and expands it in place; the hyphen used with the extract (x) option refers to stdin.(第二个tar命令从stdin读取归档文件并进行展开，展开(x)选项后面使用的连字号表示stdin。)
For operations such as searching and sorting, the soft hyphen should always be ignored.(对于像搜索以及排序这样的操作，软连词应该被忽略。)
A single hyphen (-) as a parameter means to change to the previous working directory.(将一个连字符(-)作为参数意味着切换到前一个工作目录。)
This is converted to a single hyphen when you want to use the probe during tracing.(在跟踪期间希望使用探测时，把双下划线改为单一连字符。)
If the first character of a command is a hyphen (-), the remainder of the line is executed, but its exit status is ignored.(如果一个命令的第一个字符是连字符(-)，那么该行中剩余的命令都会执行，不过其退出状态会被忽略。)
Both stdout and stdin are typically denoted as a hyphen (-).(stdout和stdin通常表示为连字符(-)。)
The dash is longer than the hyphen.(破折号比连字符稍长点。)
The names of relevant design elements will be the skin group name followed by a hyphen followed by the skin type name.(相关设计元素的名称将是皮肤组名称后加上连字符，然后再加上皮肤类型名称。)
Apply a default value, for example a hyphen (-), to make the attributes display that they are currently holding no value.(应用一个默认的值，例如一个连字符(-)，以显示当前没有任何值的属性。)
