Unisist
n. 联合国政府间科技情报系统
🗣️ 情景例句
Well, thanks a lot.
那，多谢了。
Tom's been feeling blue ever since his divorce.
自离婚以来，汤姆一直很忧郁。
He waited until the volcano became quiet and he was able to return two days later.
他等到火山平静下来，两天以后又返回去。