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
It is pleasant to jog in the early morning.
清晨慢跑很舒畅。
A good tale is none the worse for being twice told.
好故事百听不厌。
No, thank you.I don't like milk in my coffee.I like black coffee.
不了，谢谢。我不喜欢咖啡中放牛奶，我喜欢咖啡。