n.楼梯，梯级

原形：stair复数：stairs

We hear a step on the stair.
我们听见楼梯上有脚步声。
Eric could see stair under the ground.
埃里克看到地下有一道台阶。
I just climbed up three flights of stairs, and I'm already out of breath.
我才爬了三层楼梯就已经气喘吁吁了。
The baby learned to walk by pulling herself up on the stair railing.
婴儿通过扶着楼梯栏杆学习走路。
Please be careful on the stairs, as they can be slippery when wet.
当楼梯湿滑时，请小心行走。
The fire escape is located at the back of the building, down the stairs.
火灾逃生梯位于大楼后面，下楼就能看到。
She carried the heavy box up the stairs all by herself.
她独自一人把那个沉重的箱子搬上了楼梯。
The staircase leads to a spacious attic that we use as a storage room.
楼梯通向一个我们用作储藏室的大阁楼。
He tripped on the last step of the stairs and fell.
他在最后一级楼梯上绊倒了，摔了下来。
The decorator suggested painting the stairwell in a light color to make it appear more spacious.
装修师建议将楼梯井刷成浅色，使其看起来更宽敞。
The old mansion had a grand staircase made of mahogany wood.
那座古老的大厦有一座由红木制成的宏伟楼梯。
After the party, we helped clean up the mess on the stairs.
派对结束后，我们帮忙清理楼梯上的杂物。