/ˌpentˈʌp/

If something's pent-up, it's restricted or held back in some way. You might appear calm and collected, but if you've secretly got a lot of pent-up anger, it will eventually need to be released.

如果某件事是pent-up，那么就是说它在某种程度上被限制或抑制了。你可能看起来很冷静，但是如果你有很多pent-up的愤怒，最终需要释放出来。

(感情)被压抑的，被抑制的

Screaming at the top of your voice is a good way of venting pent-up frustration.

放开嗓子尖叫是发泄内心压抑的挫败感的一种好方法。