upstairs和upstair都是表示“楼上”的意思，但它们在用法上有所不同。 一般来说，upstairs是副词，通常用于表示位置或方向，比如“The party is upstairs.”（ …
towards or on the highest floor or floors of a building. 往楼上（地）;在楼上（地） an upstairs landing / window 楼上的平台／窗户. He heard …
As adjectives the difference between upstairs and upstair is that upstairs is located higher up a building while upstair is upstairs. As an adverb …
upstairs与upstair的区别没有可比性,不存在upstair 这个词.如楼上所说 upstair=upstairs (adj) ;upstairs (adv)也说明了"upstair"的活儿 ,"upstairs"也能干. …
upstairs和upstair都可以用来形容楼上的，但是它们的用法不同。. 具体如下：. upstairs是一个副词，用来形容或描述位置较高或者楼上。. 例如，“The book is …
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