唇不离腮chún bù lí sāi

比喻关系非常密切。be very closely related

• rare animals
• rarely
• rarity
• rate
• rather
• rather than
• rating
• raw
• ray
• re-
• reach
• reachable
• reach into
• react
• reaction
• reactive
• reactivity
• read
• readable
• reader
• readership
• readily
• readiness
• reading
• readout