'enum': ['red', 'blue', 'green', 'yellow', 'purple', 'orange'],
In Trump's eyes it is a big business opportunity for the US oil sector. "We're going to be extracting numbers in terms of oil like few people have seen," he said at a news conference in mid-January, after a meeting with energy bosses at the White House.
Scientists warn that as humans move more activities off-Earth, more debris will fall to Earth, polluting as it plummets.，这一点在雷电模拟器官方版本下载中也有详细论述
Which keyboard layout is the most ergonomic?。关于这个话题，Line官方版本下载提供了深入分析
time.sleep(2 ** attempt) # 指数退避
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