Gadgets carried on all vessels send electronic signals to make satellite monitoring possible at all times, and each boat is likely to go to sea with an inspector aboard twice a year.
所有的船上都携带着一种小仪器，它向卫星发送信号，使卫星能够始终监视渔船，而且每艘船可能每年两次携带检查员出海。
Recent discoveries of Siberian and Alaskan lake bed sediments leaking large quantities of methane have prompted climatologists to call for more study and satellite monitoring of these regions.
最近发现西伯利亚和阿拉斯加湖床沉积物中有大量甲烷泄漏，促使气候学家呼吁对这些地区进行进一步研究和卫星监测。
Recent discoveries of Siberian and Alaskan lake bed sediments leaking large quantities of methane have prompted climatologists to call for more study and satellite monitoring of these regions.
最近发现西伯利亚和阿拉斯加湖床沉积物中有大量甲烷泄漏，促使气候学家呼吁对这些地区进行进一步研究和卫星监测。
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