As the famous experts remarks, the secret of happiness is to think about positive things and stay optimistic.

网友抄写句子时务必仔细检查。 experts remarks，两个"s"，只能保留一个，不能同时并存。二者任选其一：

As the famous experts remark, the secret of happiness is to think about positive things and stay optimistic.

As the famous expert remarks, the secret of happiness is to think about positive things and stay optimistic.

【翻译】正如著名的专家所言，快乐的秘诀在于思考积极的事物，保持乐观。

像 say, remark，comment, state 等这些表示“说，评说，评论，指出” 的动词，使用一般现在时，暗示主语一种长期形成的观点或看法，不是“一时之说”。 人的观点或看法，不仅仅限于使用 think，believe , consider 等动词。