现在再看莱昂纳多·达芬奇所画的那只貂，在它主人轻松的怀握里，安静地歇息着，虽然仍保持高度的警惕。

And now look at Leonardo da Vinci's ermine, resting quietly, although still very much alert, in the loose grip of his mistress.

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例如，海军高度依赖的中频声纳让环保人士耿耿于怀，后者认为这些声纳扰乱了在加利福尼亚海域活动的鲸鱼和海豚。

The Navy still relies heavily on midfrequency sonar, for example, riling environmentalists who say it disrupts activity by whales and dolphins off the California coast.

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