em
美音:[em
]
英音:[em
]
n.[印]全身,行长单位 adj.[印]全身长(或宽)的(印刷符号)
难易程度:
em为短语/超纲词汇
em
/əm; əm/
pron (infml 口) = them
*Don't let 'em get away! 别让他们跑掉!
pron (infml 口) = them
*Don't let 'em get away! 别让他们跑掉!
em
In geometry, Barbier's theorem states that every curve of constant width has perimeter π times its width, regardless of its precise shape.. This theorem was first published by Joseph-Émile Barbier in 1860..
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