Sara panicked in the exam and didn't do herself justice.萨拉在考试中由于紧张未能充分发挥自己的水平。She has done her best to keep calm but finds herself trembling with tension and indecision.她尽力保持镇定，可还是由于紧张、犹豫不决而抖个不停。He found himself chattering away out of nervousness.他发现自己由于紧张而喋喋不休起来。