have an option on的意思

从这种高温烟道气生产蒸汽是一种最后的选择.Purchase manageable at indication however shipment June July seller option.
一切按指示洽购,但装船要在六、七月间,由卖方自行选定.Specify how you want frames to print.This option is available only if you are printing a Web page that uses frames.
此选项允许使用"帐号设置"来设置Internet帐号.Unchecking this option will cause this Newsgroup and all Newsgroups above it in the hierarchy to turn off the ability to receive HTML.