A microphone attached to the bottom of the glider can pick up calls from all whales, including the high frequency call of the beaked whale, which until now has been difficult to detect.

安装在滑翔器底端的麦克风可以捕捉到所有种类的鲸鱼叫声。包括由喙鲸发出的高频率叫声，在此之前一直都难以探测。

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So who are these high-frequency traders that some call nefarious and others consider them to be the next market makers?

FORBES: Painting A Portrait Of High-Frequency Traders