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
No, we have the Spring Festival's celebrations with feasts and fireworks.
不，我们以宴会和焰火庆祝春节。
You think too much.
你想太多了。
however lucky and robust we are.
不管我们多么幸运，多么健壮，