Operational safety
[计] 操作可靠性
🧩 词语组成解析
🗣️ 情景例句
When will you be through with your homework?
你的家庭作业什么时候可以做完？
Today is the scholar of yesterday.
今天是昨天的学者。
She does, doesn't she! I read she's twenty-nine,- but she must be at least forty.
是的，谁说不是呢！我从报上看到她是29岁，但她一定至少有40岁了。