Prelubrication
预先润滑
🗣️ 情景例句
You sound excited about Columbia.
听起来你对Columbia大学跃跃欲试。
Wealth is not his who has it, but his who enjoys it.
财富并不属于拥有的人，而是属于享用的人。
They all looked at a big and noisy machine in another corner of the machine shop.
他们全都看着机械车间另一角落的一台又大又嘈杂的机器。