Otters have benefited from cleaner rivers in Britain, following a ban on chemicals used in sheep dip in the late 1990s.

英国在20世纪90年代晚期对羊用防腐浸液中的化学物质颁布禁令，河水变清，水獭因而从中受益。

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Let us dip the sheep.

咱们用消毒水洗羊。

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Give the sheep a dip.

把羊浸泡一下。

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Sir Bernard said without an increase in standards people would regard police training as a process akin to a "sheep dip".

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