How can I find Velocity and Flow Rate from Y and Z pipe?

Please, can anyone help for the script at 1.20 that the video said "also she never yell or scold to the students and always encourage ....?....." ? What's next after the word encourage? Than

I am using iPhone 4 and cannot use LINE after upgrading to version 4.3.2. Now I am overseas and it is difficult to contact back home. Anyone can help me please???