发生在海洋中的水华可以覆盖数百平方公里，而且很容易在卫星图像中观测到。
Blooms in the ocean may cover hundreds of square kilometers and are easily visible in satellite images.
华西村 江苏省东部0.6平方英里(一平方公里)多岩石土壤上创建的村庄 就像这个国家数以百计的贫困村庄一样。
The hamlet of Huaxi, created on 0.6 square miles (a square kilometer) of rocky land in eastern Jiangsu province, was like hundreds of poverty-stricken villages around the country.
这座高达2582米（9357英尺）的成层火山（百科看 这里——译注）顶部被一层30平方公里的冰川（10平方英里）所覆盖，大部分冰雪都积聚在山顶南部和东部因岩浆喷发所形成的盆地中。
The 2,582-meter (9,357-foot) stratovolcano is mantled by a 30-square-kilometer (10-square-mile) glacier field, most of it amassed south and east of the summit in a basin made by a caldera depression.
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