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
His studies advanced steadily.
他的学业不断进步。
Excuse me to give you so much trouble.
对不起给你带来这么多麻烦。
and that this happens at a rate which differs little from person to person,
衰老的速度在人与人之间相差甚微，