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
God is equal to everyone!
上帝是公平的。
Life is half spent before we know what it is.
等到认识人生，已经一半过去了。
I think we should do that another day. Then we can leave early in the morning before it gets too hot.
我想我们还是改天再去游览高坝吧。那样我们可以一清早就动身，免得天气太热。