Sdu
n. 香港特别任务连（通称飞虎队, Special Duties Unit）；[电视]信号分配装置（Signal Distribution Unit）
🗣️ 情景例句
Hello, it's good to see you again.
很高兴又见到你。
He's a student,too.
他也是学生。
they do not realize that they are deprived of the necessities of life.
却没有意识到被剥夺了生活所必需的东西。