复数
position 60 in a countable series of things
one part in sixty equal parts
同义词：one-sixtieth
the ordinal number of sixty in counting order
同义词：60th
Degrees are divided into minutes (sixtieths of a degree) and seconds (sixtieths of a minute) of arc, so that there are 3, 600 seconds of arc, or arcseconds, in one degree.
ECONOMIST: A roadmap for planet-hunting
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。