通过对不同时期拍摄的图片的对比，科学家就可以推断出那些是恒定的遥远银河系，从而专注于研究按轨道运行的彗星。
By comparing photos taken at different times, scientists can subtract out objects that appear stationary, like far-off galaxies, and focus on things that appear to be moving in orbits, like asteroids.
一个知情人士透露说，这个爱分心的歌星，有段时间，曾非常专注于这样一个计划：在《颤栗》音乐录影的基础上，拍摄出一部长篇电影。
One person close to the famously distractible singer says that for a time he became preoccupied with making a feature-length movie based on the music video for the album's title track.
近来，他专注于武侠片拍摄，包括由李连杰和刘德华主演，《武侠》连和编剧须兰执笔的《投名状》。
Recently he has concentrated on martial-arts works, including The Warlords, starring Kaneshiro, Jet Li and Andy Lau and co-written by Wu Xia's screenwriter, Aubrey Lam.
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