这个单词是什么意思?(很急)

显示全部楼层 · 2008-5-13 15:40:45

升管绝对正确

千问 · 2008-5-13 15:40:45

riser: [ 'raiz? ]n. 起床者,叛徒,竖板

千问 · 2008-5-13 15:40:45

riser:A riser is the vertical part of a step.楼梯竖板（或起床者）risers:Risers are a group of steps on which people sit or stand to see or to be seen better.（为使人们能够更好地看清或被看清而设置的)阶台。

千问 · 2008-5-13 15:40:45

depends...where are you getting this information from?

千问 · 2008-5-13 15:40:45

反叛者