rub

• 表示对表面施加压力并移动的动作，即摩擦、揉搓；也指用于抛光或清洁的物质。

A noun referring to an act of applying pressure and movement to a surface, or a substance used for polishing or cleaning.

1. Massage or frictionA2informal

   An act of applying pressure and moving one's hand or an object back and forth on a surface.

   揉搓

   • She gave her sore back a gentle rub.
   • A quick rub with a cloth removed the stain.
   • He applied a rub to his aching muscles after the workout.

   同义词chafefrictionmassagerubdownstroking

2. Difficulty or problemB2informal

   A difficulty or obstacle that prevents something from being straightforward.

   障碍

   • The rub is that we don't have enough time to finish the project.
   • There's the rub: we need more funding but no one will invest.
   • The only rub is that the flight is delayed by three hours.

   同义词catchdifficultydrawbackhitchimpedimentobstacleproblemsnag

• 动词，表示使一个表面在另一个表面上移动，通常带有压力，用于清洁、弄平或涂抹某物。

A verb used to indicate the act of moving one surface against another, often with pressure, for cleaning, smoothing, or applying something.

1. Apply pressure and moveA2formal

   To move one's hand or an object back and forth over a surface while pressing, often to clean, dry, or soothe.

   摩擦

   • She rubbed her eyes after waking up.
   • He rubbed the stain with a cloth to remove it.
   • The cat rubbed against my leg.

   同义词chafemassagepolishscrapescrubstrokewipe

2. MassageB1formal

   To press and move your hands on a part of someone's body to reduce pain or help them relax.

   按摩

   • The therapist rubbed my shoulders to relieve the tension.
   • He rubbed his sore muscles after the workout.
   • She gently rubbed the baby's back to help him sleep.

   同义词kneadmanipulatemassagework

3. Cause frictionB1formal

   To cause something to move against something else, often resulting in wear or irritation.

   摩擦

   • The new shoes rubbed against my heels and caused blisters.
   • The rope rubbed against the rock, fraying over time.
   • The collar of the shirt rubbed his neck uncomfortably.

   同义词abradechafecorradegrategrindscrapewear

短语动词变体rub alongrub downrub offrub out