To be so overcome with emotion (e.g., shock, grief, anger, shyness) that one wants to speak but is unable to utter a sound; to be choked up; to be speechless.
面对突如其来的变故，她感到一阵心酸，欲言无声，眼眶也湿润了
Faced with the sudden turn of events, she felt a pang of sadness, wanting to speak but unable to utter a sound, and her eyes welled up.
Next Idiom