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
Yes. Wooster Street is two blocks,
噢 Wooster街还有两条街的距离
My brother wants to learn how to sail a boat.
我的兄弟要去学操纵帆船。
She was not especially pretty. But she was extremely bright.
她不是特别漂亮，但她极聪明。