lubricate /ˈluːbrəˌkeɪt/ verb lubricates; lubricated; lubricating
lubricates; lubricated; lubricating
Learner's definition of LUBRICATE
[+ object]
: to make (something) smooth or slippery : to apply a lubricant to (something, such as a machine or a part of a machine)使平滑；给…加润滑油 — lubrication
/ˌluːbrəˈkeɪʃən/ noun, plural lubrications