1. The servant´s mistress was horrified and threatened to dismiss the girl at once.
    那个仆人的女主人受到了惊吓并威胁说要立即把那个姑娘打发走。

2. Humboldt smiled, took a louse from the mistress´s hair and put that under the instrument.
    洪堡笑了笑，从那位贵妇的头上也拿下了一只虱子放到了显微镜的下面。

3. Is your mistress at home?
    女主人在家吗？