情不自禁 (qíng bú zì jīn): Unable to control one's feelings / unable to restrain oneself — Meaning & Stroke Order

Amidst the solemn national anthem, the entire audience couldn't help but stand up respectfully.

Hearing that familiar song, she couldn't help but hum along.

Faced with such a magnificent natural wonder, who could help but exclaim in admiration?

Despite being extremely excited internally, he still tried hard to control himself and did not let his emotions show involuntarily.