?? 詞語組成解析
sir
[s?]
n. 先生;（用于姓名前）爵士;（中小學生對男教師的稱呼）先生;老師;
n. 杰倫特（男子名）
??? 情景例句
Smoking is bad for your health.
吸煙對你的健康有害。
They only want to solve domestic problems.
他們只希望解決國內的問題。
The disadvantage with carrying out interviews is that it may take a long time.
走訪用戶的不利之處是它需要很長的時間。