Dewar(vacuum)flask
[化] 真空瓶; 杜瓦(真空)瓶
🗣️ 情景例句
Good-bye.
再见。
Please sign a copy of our Sales Contract No.156 enclosed here in duplicate and return to us for our file.
请会签第156号销售合同一式两份中的一份，将它寄回我方存档。
What are you going to do this evening. Jill?
今晚你打算干什么，吉尔？