相反，马西博士与像他那样的其他科研人员在尽力发现一些变化，即恒星发出光束的波长受位置移动的影响而造成的变化。
Instead, Dr Marcy and others like him look for changes that the wobbles cause in the wavelength of the light from the star.
在华盛顿，组织者推迟了纪念马汀路德金的活动，原定于周日纪念金博士发表“我有一个梦想”演讲48周年庆与风暴不期而遇。
In Washington, organizers postponed the dedication of the Martin Luther King Jr. Memorial, set for Sunday to coincide with the 48th anniversary of Dr. King’s “I Have a Dream” speech.
马西博士怀疑，他的这个拥有地球质量四十五倍的新发现星体有一个岩层核心构成，并被一层很厚实的氢气与氦气层笼罩。
Dr Marcy suspects that his new discovery, which has about 45 times the mass of the Earth, is composed of a rocky core surrounded by a thick envelope of hydrogen and helium gas.
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