riserKK [ˋraɪzɚ] /ˈɹaɪzɚ/發音名詞1起床者多與 early、late 連用She is an early riser and often walks before sunrise.她習慣早起,經常在日出前去散步。2豎板、級高Each riser on the staircase should be the same height.樓梯每一階的豎板高度都應該一致。3立管、豎管A leaking riser in the wall flooded the apartment below.牆內的立管漏水,把樓下的公寓淹了。4階台、階梯式平台常用複數The choir stood on risers so everyone could be seen.合唱團站在階梯式平台上,這樣每個人都看得到。