Security constraint
[计] 安全性约束
🧩 词语组成解析
🗣️ 情景例句
We usually accept payment by irrevocable L C payable against shiping documents.
我们一般用不可撤销信用证，凭装运单据结汇付款方式。
When the well is full, it will run over.
井水满了要溢出。
It has been said that everyone lives by selling something.
据说每个人都靠出售某种东西来维持生活。