He was about to speak.Again he bottled himself up.

他想说话又忍住了。

Maggie had to clamp a hand over her mouth to stop herself from laughing.

麦琪不得不用手紧捂住嘴，忍住笑声。

He bit back a sigh of impatience.

他虽有些不耐烦，但还是忍住没有叹气。

I just managed to smother a yawn.

刚设法忍住了一个呵欠。