The Indian Ocean tsunami in 2004, which caused some 250,000 deaths, does not feature on this chart.

有约25万人死亡的2004年印度洋海啸都没有出现在下面的图表中；

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For example, as the atmospheric carbon-dioxide level in Hawaii goes up, the ph at a mid-ocean mooring about 450km to the north-west goes down (see chart).

例如在夏威夷，大气中二氧化碳浓度在升高，其西北方向约450公里处海洋监测点的PH值在下降(见图表)。

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From here, you can gaze down at the ocean shifting through a paint-chart's worth of blues as the ship draws closer to the islands.

BBC: All at sea in New Zealand

For example, as the atmospheric carbon-dioxide level in Hawaii goes up, the pH at a mid-ocean mooring about 450km to the north-west goes down (see chart).

ECONOMIST: Ocean acidification