by Toma

it is safe/fair to say, it is not a stretch to say, suffice to say 英文的意思和用法

it is safe to say that 可以確信的說

it’s fair to say 持平而論（強調後面講的事情是真的 celeb 名人，celebrity 的亂寫XD

it is not a stretch to say that 不誇張地說

suffice to say 可以這麼說（ suffice 滿足要求

Practice

it is safe to say 可以確定地說（加 I think 常見

it is safe to say that -> [bb w=”it is safe to say that”]https://www.youtube.com/watch?time_continue=182&v=e9XvPGBXHYU&feature=emb_logo[/bb]
it is safe to say -> [bb w=”it is safe to say”]https://www.youtube.com/watch?time_continue=357&v=4Lsxx4xktSI&feature=emb_logo[/bb]