intermittently 復習

様々な方面でドローンが使われていますが、サメ対策用のドローンに関しての記事です。記事に出てくるオーストラリアの海岸では、日本人サーファーをふくむ何人もの方が人食いサメによる被害にあっています。
Beachgoers will be protected from sharks by drones and "smart" drum lines, according to the New South Wales (NSW) government.
A trial will begin on the NSW north coast where there have been several attacks in the past 12 months. The drones will feed images back to operators looking for sharks using GPS co-ordinates. The measures are part of a shark management strategy which also includes barriers and helicopter surveillance."There is no easy way to reduce risks for swimmers and surfers," NSW minister for primary industries Niall Blair, said in a statement.(中略)
本日は以下より"intermittently"を拾います。
Field test
A field test of the drones will begin at Coffs Harbour and a "smart" drum line will be trialled at Ballina, near where a surfer was mauled to death in February. These lines alert officials immediately when a shark has been snagged on a baited hook, unlike traditional lines that are checked intermittently.
『Wisdom英和辞典 第三版』によりますと、「副 途切れ途切れに、断続的に」とあります。ODには "adverb At irregular intervals; not continuously or steadily"とあります。
例: he has worked intermittently in a variety of jobs
形容詞は"intermittent"となり、「時々中断する、断続的な、散髪的な」です。"an intermittent spring"となると 「間欠泉」を表します。『Wisdom英和辞典 第三版』
ドローンの使用に関しては様々な意見がありますが、このように人を守るための使用には期待をしたいと思いました。(Dew)
http://www.bbc.com/news/world-australia-34918377