finally, we'll add an arbitrary 30-second sleep to ensure the command sequence finishes after the two subshells do.

the use of the brackets ensures the commands are grouped and executed in a subshell.

使用括号是保证此命令分在一个组中，并且在子shell中执行。

the parentheses effectively execute the statements in a subshell.

圆括号让语句在一个子shell中执行。

better yet, a subshell can contain another subshell, so expansions can be nested, too.

然而更有价值的是，子Shell可以包含另一个子Shell，所以还可以进行嵌套扩展。

you can generally do this by running a list of commands in a subshell or by running a list of commands in the current shell.

您一般可以通过在某个Subshell中运行一个命令列表或通过在当前Shell中运行一个命令列表来实现此目的。

finally, the back quotes both interpret the variable and run the intermediate result as a subshell.

最后，反撇号解释变量并作为子shell运行中间结果。

the parenthesized series of commands is called a subshell.

命令中带圆括号的部分称为subshell。

because the subshell is followed by a pipe, all the output of the subshell is sent to the next command in the pipeline.

因为subshell后面跟着管道，所以subshell的所有输出都通过管道传输给了下一个命令。

here, the subshell command du -sh work | cut -f1 yields the total size of the work directory in a format compatible with pv.

在这里，子shell命令du-shwork|cut-f1以与pv兼容的格式生成工作目录的总大小。

the series of commands collected in parentheses runs in a subshell and does not affect the state of the current shell.

在圆括号中的系列命令将在一个子Shell中运行，并且不会对当前Shell的状态产生影响。

the importance of zoomorphism thought cultivating in the martial arts

动物形象思维培养在武术技击演练中的重要作用

in the english to chinese custom language culture of perspective and the cognition difference zoomorphism compare

英汉习语中的动物形象之文化透视与认知差异比较

a comparative study of zoomorphism in russian and chinese

俄汉语中表动物词转指人现象之比较

the zoomorphism decorates the gardens and means luck.

动物形象在园林中起着装饰和寓意吉祥的作用；

key technology research on the mold of skelp continuous casting machine

管坯连铸机结晶器关键技术研究

it was very nice to see joop again.

再一次看到Joop我很高兴。

the 33-year-old bride wore a dress designed by wolfgang joop, and a diamond tiara belonging to her family.

33岁的新娘穿着由沃夫冈·乔普（WolfgangJoop）设计的礼服，头戴一件家族祖传的钻石头饰。

neither obsession or joop were a favorite. they may have been a quick buy from his security guards because bav was not always easy to find.

Obsession和Joop都不是他的最爱。他也许会让保安买一些，因为BAV不是那么容易找到的

desperados: wanted dead or alive

赏金奇兵：西部通缉令

we are all desperados, ain't we?

我们都是亡命之徒，不是么？

the form and meaning characteristics of congratulatory speech

祝愿语的形式和意义特征