You're always allowed to include the package part of the variable's name, and if you do, Perl will know exactly which variable you mean.
允许指定变量名的包部分，假如这样做，perl会明确知道你指的是哪个变量。
If any accessories are being ordered, add the suffix, "A" to the end of the Actuated Valve Package part number.
如果订购任何附件，则在执行机构阀门组件包型号末端加上后缀“A”。
If any accessories are being ordered, add the suffix, "A" to the end of the Actuated Valve Package part number.
如果订购任何附件，则在执行机构阀门组件包型号末端加上后缀“A”。
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