Ssd
abbr. （拉）基督教《圣经》博士（Sacrae Scripturae Doctor）；稳态分布（steady-state distribution）
🗣️ 情景例句
How's that?
怎么是这样？
Alice did not look at the students.
爱丽斯没有看到学生。
The guards couldn't have been watchig very carefully.
警卫不可能一直认真地查看。