Srsd
abbr. Space and Re-entry Systems Division 航天與再入系統處
??? 情景例句
I think aerobics is easy.
我覺得有氧運動很容易。
Cool it man，I'm sorry.
對不起，請您息怒。
For the first time in his life, he became the proud owner of a bed which had springs and a mattress.
他平生第一次自豪地擁有了一張既有彈簧又帶床墊的床。