...甚至灭绝。 But the British did not think so, that the British era, full of mind are the massacres, occupation, or even extinction. 1498年的那个黄昏，当小船接近纽芬兰岛时，探险家卡伯特明显地觉得船被什么东西阻碍了，船速慢了下来。
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Djoghlaf argued that extinction rates for some animal or plant species were at a historic high, up to 1, 000 times those seen before, even affecting crops and livestock.
艾哈迈德·朱格拉夫指出，一些动植物的灭绝率高达之前的1000多倍，创历史新高，甚至影响了农作物和畜牧业。
Once every 100 million years or so, an even larger asteroid may cause a mass extinction; most scientists believe a six-mile-wide asteroid doomed the dinosaurs 65 million years ago.
每隔1亿年左右，一颗更大的小行星可能导致物种大灭绝。大多数科学家相信一颗6英里直径的小行星在6500万年前使恐龙灭绝。
Evolution sometimes results in individuals or populations becoming less fit and may occasionally even lead to extinction.
演化有时会导致个体或者群体适应力下降，甚至可能导致物种灭绝。
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