Cascade oiling
[建] 环给油, 油杯润滑
🧩 词语组成解析
[化] 加脂
🗣️ 情景例句
He is a man of heart.
他是一个热血男儿。
Is that Mr.Shen?
沈先生吗？
If there had not been a hard layer of rock beneath the soil, they would have completed the job in a few hours.
如果不是因为土壤下面有一层坚硬的岩石，他们的营救工作仅用几个小时就可以完成了。