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
How many do you want? I can probably get the owner to bring down the price.
你要几只？我大概可以找店主杀价！
You know that some countries are selling this kind of products at cheap prices in large quantities.
您知道有的国家对这种商品正在削价抛售。
Excuse me!
对不起