to be overwhelmed by emotions; to lose self-control or mental composure due to strong feelings
听到这个突如其来的好消息，她激动得心不由主，眼泪都快掉下来了
Hearing the sudden good news, she was so excited that she lost self-control, and tears almost fell.
Next Idiom
to be overwhelmed by emotions; to lose self-control or mental composure due to strong feelings