Dewar(vacuum)flask
[化] 真空瓶; 杜瓦(真空)瓶
🗣️ 情景例句
In order to catch fish, you have to do this.
要钓鱼你就得这样。
A joke never gains an enemy but often loses a friend.
开玩笑总不能化敌为友，反而有时会失去朋友。
As a reasonable guess, they might, on an average, be 100 light years away.
据合理推算，外星人离我们平均距离也有100光年之远