6 sentences

1. 这层楼有二十级台阶。

   zhè céng lóu yǒu èr​shí jí tái​jiē.

   This floor has twenty steps.

   Source: Dong Chinese Dictionary

2. 他坐在大门前的台阶上休息。

   tā zuò zài dà​mén qián de tái​jiē shàng xiū​xi.

   He is resting on the steps in front of the main entrance.

   Source: Dong Chinese Dictionary

3. 我们要爬很多层台阶才能到达铁塔的顶端。

   wǒ​men yào pá hěn​duō céng tái​jiē cái néng dào​dá tiě​tǎ de dǐng​duān.

   We have to climb many flights of stairs to reach the top of the tower.

   Source: Dong Chinese Dictionary

4. 这里的台阶非常陡，下楼梯的时候你要多留神。

   zhè​lǐ de tái​jiē fēi​cháng dǒu, xià lóu​tī de shí​hou nǐ yào duō liú​shén.

   The steps here are very steep, so you need to be careful when going downstairs.

   Source: Dong Chinese Dictionary

5. 这个露天矿场的台阶设计非常科学。

   zhè gè lù​tiān kuàng​chǎng de tái​jiē shè​jì fēi​cháng kē​xué.

   The bench design of this open-pit mine is very well-engineered.

   Source: Dong Chinese Dictionary

6. 既然他已经主动道歉了，你就顺着台阶下吧。

   jì​rán tā yǐ​jīng zhǔ​dòng dào​qiàn le, nǐ jiù shùn​zhe tái​jiē xià ba.

   Since he has offered an apology, you should take the opportunity to let it go.

   Source: Dong Chinese Dictionary