(as) clean as a (new) pin
US /əz kliːn əz ə njuː pɪn/
UK /əz kliːn əz ə njuː pɪn/
1.
一尘不染, 非常干净
very clean or neat
:
•
After she finished cleaning, the kitchen was as clean as a new pin.
她打扫完后，厨房一尘不染。
•
His car is always kept as clean as a new pin.
他的车总是保持得一尘不染。