without speaking 默默地;不说话地 without making any or much sound synonym quietly悄悄地;静静地 without using words or sounds to express something 无声地;默默地;不用言语表达地
Idioms
sit/stand silently by
to do or say nothing to help somebody or deal with a difficult situation 袖手旁观;坐视 We can’t sit silently by and let them arrest him! 我们不能袖手旁观,让他们逮捕他!