Ssn
abbr. 子系统号（Subsystem Number）；（美）社会保险号（Social Security Number）；智力严重逊常（Severely Subnormal）
🗣️ 情景例句
I'm afraid the cardboard boxes are not strong enough for transport by sea.
我担心这种纸箱，用于远洋运输，不够结实。
My father refused to consent to my marrying her.
父亲拒绝答应我和她结婚。
adopted by banks, of printing the customer's name on his cheques.
某些银行已采用把储户姓名印在支票上的作法。