Vacuum-flask
n. 保温瓶, 热水瓶
🧩 词语组成解析
flask
[flæsk]
n. 瓶，长颈瓶;[化]烧瓶;火药筒;[机]沙箱;
🗣️ 情景例句
and you care about us,
而且关心我们大家，
Take the rough with the smooth.
既能享乐也能吃苦。
The problem now facing humanity is: What is going to be done with all this knowledge?
用这些知识去做什么？