季节以夏至，冬至和春分、秋分这些与地球的倾斜相关的天文学术语标记。
The seasons are marked by solstices and equinoxes - astronomical terms that relate to Earth's tilt.
其他五个有标记的物体都是星系的核心，这些核心对天文学家而言就是一个确切的证据，这个证据显示ESO 146-IG 005星系最近十分繁忙，它正在吞并其他稍小一些的星系。
The other five objects are all galaxy cores, which to an astronomer is like a smoking gun: ESO 146-IG 005 has been very busy lately, eating other, smaller galaxies.
事实上，伦敦到处都是文学地标，所以当地启动了“蓝标”计划，在一些著名地点做上显眼的标记。
In fact, literary landmarks are so ubiquitous in London that the "blue plaque" scheme was started to visibly mark notable sites.
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