Ssd
abbr. （拉）基督教《圣经》博士（Sacrae Scripturae Doctor）；稳态分布（steady-state distribution）
🗣️ 情景例句
Thanks, Mom.
谢谢，妈。
I'm afraid not. She doesn't have any openings in the morning.
恐怕不行。上午她没有空。
She does not know London very well, and she lost her way.
她对伦敦不很熟悉，因此迷了路。