B:All right, Doctor.
A:Put your hands like this and your shoulders forward like this,and rest your chin here.
B:Is that right?
A:Yes.I'll give you instructions（指導，說明） over the microphone.
B:Take a deep breath, then breathe out,and hold your breath. Good. Now, keep breathing in and out. Don't be nervous. Don't move while the machine is moving.
A:I'll do that.
B:Right.That's finished. You can put your clothes on now.
