我来试试： 这句话可以这样读：doubling the number of satellites that are now known to orbit the distant planet to twelve 查know 的用法 （Longman Dictionary) be known to do sth (example: Smoking is known to increase a person's risk of developing lung cancer.) know sb/sth as sth 没有know...as doing sth的说法。 比如：I know him as a teacher. (对）可是，I know him as teaching in a school, 就很别扭。
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