New brooms often make a clean sweep of old staff.

新扫帚总是要将所有旧的灰尘一扫而净。

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Hotel staff quickly worked to sweep up the mess.

CNN: Military investigates hostile fire in 'green zone'

P. sweep in 1994 Berman got everything he asked for--more staff, more powerful computers, Internet experts, scanners to feed vast numbers of documents into his computers so every speech, every vote, every bill can be retrieved instantly.

CNN: It's All In The Timing