Unisist
n. 联合国政府间科技情报系统
🗣️ 情景例句
It's a beautiful day.
今天天气真好。
We know not what is good until we have lost it.
有的时候不爱惜，失了以后空叹息。
He loved to be told that one of his imaginary products was temporarily out of stock and he would faithfully promise to call again at some future date, but of course he never did.
他爱听售货员说他想像出来的那种东西暂时脱销，于是他就煞有介事地许诺改天再来光顾。当然，他再也不会来了。