It's on the second floor
在二樓
Billy: What grade are you in?
Sophie: I'm in the third grade.
Billy: Let me help you. Where is your classroom?
Sophie: It's on the second floor.
Billy: Whew! Here it is.
Sophie: Thank you. But...I have to take it to the science room.
Billy: What? It's on the fourth floor!
比利：你是幾年級的?
蘇菲：我是三年級的。
比利：讓我來幫你吧。你的教室在哪里?
蘇菲：在二樓。
比利：噢!終于到了。
蘇菲：謝謝你。但是......我必須把它拿去實驗室。
比利：什么?那是在四樓!