Eng

Lubricant...

滑

Cunning, Glide, Lubricant, Lubricated, Skate, Ski, Slick, Slide, Slip, Slippery, Smooth

潤

Embellish, Enrich, Glossy, Lubricant, Lubricate, Moist, Moisten, Profit, Smooth, Writing

潤滑劑

Lubricant

(Lubricate, Lubricated, Lubricates, Lubricating, Smooth, Smoothly, To lubricate)