安吉尔博士估计这个巨大的遮阳天棚的总重量大约会在20,000,000公吨。
Dr Angel estimates that the total mass of the sunshade required would be around 20m tonnes.
据估计，在英国蜘蛛一年里所消灭昆虫的重量将会超过这个国家人口的总重量。
It has been estimated that the weight of all the insects destroyed by spiders in Britain in one year would be greater than the total weight of all the human beings in the country.
据估计，在英国蜘蛛一年里所消灭昆虫的重量超过这个国家人口的总重量。
It has been estimated that the weight of all the insects destroyed by spiders in Britain in one year would be greater than the total weight of all the human beings in the country.
但是据估计：在英国，蜘蛛一年吃掉的昆虫的总重量将比英国全国所有人的重量之和更重。
It has been estimated that the weight of all the insects destroyed by spiders in Britain in one year would be greater than the total weight of all the hunman beings in the country.
但是据估计：在英国，蜘蛛一年吃掉的昆虫的总重量将比英国全国所有人的重量之和更重。
It has been estimated that the weight of all the insects destroyed by spiders in Britain in one year would be greater than the total weight of all the hunman beings in the country.
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