Deneb
n. 天津四（位于天鹅座）
🗣️ 情景例句
What did I do with them?
我把它们放在哪儿了？
Could you tell me where is the rest room?
你能不能告诉我洗手间在哪里？
Two factors weigh heavily against the effectiveness of scientific research in industry.
两个因素严重地影响工业里科学研究的效果：