Sdu
n. 香港特別任務連（通稱飛虎隊, Special Duties Unit）；[電視]信號分配裝置（Signal Distribution Unit）
??? 情景例句
OK. Let's talk.
好， 我們談談吧。
What do you think of the proposal?
你的看法如何？
He was greeted by an unpleasant smell which convinced him that I was telling the truth.
一股怪味襲來，使他相信了我說的真話。