Ssd
abbr. （拉）基督教《圣经》博士（Sacrae Scripturae Doctor）；稳态分布（steady-state distribution）
🗣️ 情景例句
Are you being waited on?
您需要服务吗？
That was a close call.
太危险了。
Dear Ling Feng,
亲爱的Ling Feng：