"That's indeed the case" 可以用英语表达为 "That's indeed so."。
这是一个英式英语的常用说法，表示同意对方的看法或者论点。
例句：
"I heard that he's quitting his job next week." "That's indeed so."
"It's going to rain today." "That's indeed the case."
翻译：
"我听说他下周要辞职。" "那的确如此。"
"今天要下雨。" "那的确如此。"