Dewar(vacuum)flask
[化] 真空瓶; 杜瓦(真空)瓶
🗣️ 情景例句
I had the appointment written on my calendar and was looking forward to the occasion.
我早已把这个约会写在我的日历上而且一直期待着这一时刻。
That work will take three hours.
完成那项工作需要三小时。
No, it's not him.
不，不是他。