Use the && control operator to combine two commands so that the second is run only if the first command returns a zero exit status.
使用&&控制操作符来组合两个命令，以便仅当第一个命令返回零退出状态时才运行第二个命令。
Similarly, the || control operator separates two commands and runs the second command only if the first command returns a non-zero exit status.
类似地，||控制操作符分隔两个命令，并且仅当第一个命令返回非零退出状态时才运行第二个命令。
Progression to papermaking and coating control operator occupations is possible with experience.
随着经验积累，可能晋升到造纸和涂料控制操作员。
Progression to papermaking and coating control operator occupations is possible with experience.
随着经验积累，可能晋升到造纸和涂料控制操作员。
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