The trench is most sharply defined on the eastern (continental) side: depth plunges rapidly from a few hundred meters (light blue) to several thousand meters (deep blue).
海沟最明显的界限是东部靠大陆的地方:海水深度突然从两三百米(浅蓝色)迅速降低到数千米(深蓝色)。
Alexandrine parakeets, originally from Asia, and blue-crowned conures, from Venezuela, have also been observed nesting in eastern England.
来自亚洲的亚历山大鹦鹉和来自委内瑞拉的蓝冠锥尾鹦鹉也已有发现在英格兰东部筑巢。
Last month's shows a deep blue splodge over Iceland, Spitsbergen, Scandanavia and the UK, and another over the western US and eastern Pacific.
上个月,冰岛、斯匹次卑尔根岛、斯堪纳维亚半岛和英国等地区,以及美国西部、东太平洋地区,都被深蓝色色块覆盖。
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