"欢迎来石洲" (huānyíng lái shízhōu)是欢迎某人来到石洲的意思。
"石洲" (shízhōu)是指一个地方的名字，因此这句话通常会在邀请某人到这个地方来时使用。
例句：
"欢迎来石洲参观我们的新展览。" (Huānyíng lái shízhōu cānguān wǒmen de xīn zhǎnlǎn.) - "Welcome to visit our new exhibition in Shizhou."
"我们非常欢迎你来石洲度假。" (Wǒmen fēicháng huānyíng nǐ lái shízhōu dùjià.) - "We would very much welcome you to come to Shizhou for a vacation."