Upper cylinder lubrication
[化] 上部汽缸润滑
🧩 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;
n. 润滑, 注油, 润滑作用\\n[计] 润滑
🗣️ 情景例句
Forgive me for being 20 minutes late for our date.
请原谅我迟到了二十分钟。
Have a good time.
祝您快乐。
Now is as good a time as any.
就现在好了。