Upper stem seal
[化] 上阀杆密封
🧩 词语组成解析
upper
['ʌpə]
adj. 地位较高的;上面的;内地的;地表层的;
n. 鞋帮，靴面;兴奋剂;令人兴奋的经历;
stem
[stɛm]
n. （花草的）茎;词干;（高脚酒杯的）脚;烟斗柄;
vt. 遏制[阻止]（液体的流动等）;阻止;封堵;遏止;
seal
[sil]
n. 密封;印章;海豹;封条;
v. 密封;盖章;决定;封上（信封）;
🗣️ 情景例句
I've been saving them for today.
我一直留着等今天才戴。
Newspapers inform us of daily events.
报纸把每天发生的事都告诉了我们。
No matter where you live, you would find it difficult not to laugh at, say, Charlie Chaplin's early films.
比如说，不管你生活在哪里，你看查理。卓别林的早期电影很难不发笑。