In fact, the Canadian Arctic Archipelago acts as a "draintrap" for ship-wrecking multiyear ice, Howell says.
郝伟说,事实上,加拿大北极群岛起到了将能够毁坏船只的多年冰引入西北通道的作用。
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This invention relates to structural changing of the waste water draintrap in housing construction and the double valve water tank of the waste water filter and sanitary ware urinal.