to reach the limit of one's psychological or physical endurance and be unable to withstand pressure or hardship any longer

面对接连不断的挫折，他再怎么坚强也绷不住了。

to be unable to restrain one's emotions, especially when attempting to suppress laughter, tears, or a reaction to something absurd

这个视频的结尾太反转了，我实在绷不住笑出了声。