单词	stair
释义	stairstair /stɛr/ ●●● S2 W2 noun Etymology ETYMOLOGYstair Origin: Old English stæger Collocations COLLOCATIONS► on the stairs  The children sat on the stairs, listening. ► up/down the stairs  Jerry ran up the stairs. ► flights of stairs  We carried the groceries up four flights of stairs (=sets of stairs). ► the bottom/foot of the stairs  There was a letter at the foot of the stairs. ► the top/head of the stairs  I left my briefcase at the top of the stairs. 1 stairs [plural] a set of steps built for going from one level of a building to another → step:  The children sat on the stairs, listening.up/down the stairs Jerry ran up the stairs. We carried the groceries up four flights of stairs (=sets of stairs).the bottom/foot of the stairs There was a letter at the foot of the stairs.the top/head of the stairs I left my briefcase at the top of the stairs. → see also downstairs, upstairs12[countable] one of the steps in a set of stairs:  The second stair creaks when you step on it.3[countable] literary a set of stairs:  I heard footsteps coming up the stair. [Origin: Old English stæger]
随便看	rancidity rancor rancorous rancorously rand Rand, Ayn random random access memory randomize randomly randomness random variable rang range rangefinder ranger Rangoon rank rank-and-file rank and file ranking Rankin, Jeannette rankle rankly rankness

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