“我们相约去看海”可以用英文表示为 "We made plans to go see the sea" 或 "We have arranged to go see the sea."

这句话的来源是英文动词 "to make plans"，意思是"做计划"。英文动词 "to arrange" 的意思是 "安排，筹划"。

下面是一些可以使用这句话的英文例句和中文翻译：

"I made plans to go see the sea with my friends next weekend." (我和朋友下周末相约去看海。)
"We arranged to go see the sea at sunrise." (我们安排在日出时去看海。)
"She made plans to go see the sea with her family during the hopdays." (她和家人在假期期间相约去看海。)
"They arranged to go see the sea on their honeymoon." (他们安排在蜜月期间去看海。)