禁止在湖里游泳用英文怎么说

"Swimming in the lake is prohibited" 或 "No swimming in the lake"

这个短语表示在湖里游泳是被禁止的。"Prohibited" 是 "禁止" 的意思，"No" 是 "不能" 的意思。

例句:

"Swimming in the lake is prohibited due to high levels of bacteria."
"因细菌含量高，在湖里游泳被禁止。"
"Please obey the signs and remember that swimming in the lake is not allowed."
"请遵守标志，记住在湖里游泳是不允许的。"