Dear sir
亲爱的先生
🧩 词语组成解析
dear
[dɪr]
adj. 亲爱的;敬爱的;昂贵的;严厉的;
n. 亲爱的人;宠物;
int. 哎;
adv. 高价地;疼爱地;贵;
sir
[sɝ]
n. 先生;（用于姓名前）爵士;（中小学生对男教师的称呼）先生;老师;
🗣️ 情景例句
They mentioned you as a good source of information.
他们说你消息灵通。
I will help you.
我会帮助你。
Who could have imagined, in the mid 1970s, for example, that by the end of the 20th century, computers would be as common in people's homes as TV sets?
举个例子吧，在20世纪70年代中叶又有谁能想得到在20世纪末的时候，家庭用的计算机会像电视机一样普遍？