Others felt bound to follow suit.其他人觉得有必要效仿。

I am bound to say (that)<正式>我不得不说…

I'm bound to say that since this report was issued two years ago, progress has been slow.我不得不说, 自从这个报告两年前发布以来, 进展太缓慢了。

I'm bound to say that it seems to me this is certain to lead to violence.我不得不说的是, 在我看来, 这肯定会引起暴力。

He's bound to fail.他注定会失败。

You're almost bound to make a mistake.你几乎肯定会出错。

He's bound to come.他一定会来的。