Security constraint
[计] 安全性约束
🧩 词语组成解析
🗣️ 情景例句
He made up his mind to give up smoking.
他下决心戒烟。
Many dishes, many diseases.
多吃多病。
Which may keep company with the vessel for an hour without visible or more than occasional movement of wing.
它们随船飞行一小时也难得见其扇动一下翅膀。