Unctuosity
油性, 润滑性
✅ 同义词
🗣️ 情景例句
You're right, Robbie.
你说得对 ，Robbie。
Just let it be.
就这样吧。
In the pioneering days, however, this was not the case at all.
然而，在登山运动的初期，全然不是这种情况。