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.
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.
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。
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