She didn't feel a bit nervous though it was the first time she'd spoken in public. 她虽是第一次当众讲话,却一点都不发慌。
Keep calm! Don't get flurried. 镇静些! 别发慌。
牛津高阶第八版
美国韦氏词典
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维基百科 (自由的百科全书)