2--You can place the smaller one in the overhead bin and put the bigger one under the seat in front of you.

1--Thank you very much.

2--Please make sure to fasten your seat belt. We are to take off.

===================================

注解：

1.stewardess(轮船或火车上的)女乘务员

2.overhead bin行李架

3.seat belt(汽车或飞机上的)安全带

===================================

译文：

1--请问，乘务员，我把我的包放哪里呢？

2--你可以把小包放到头顶上的行李架里，将大箱子放到您前方的座位下。

1--非常感谢。

2--务必确保系好安全带。飞机就要起飞了。