Answer the phone, you should pay attention to the mouth and microphone to keep a distance of about 4 cm; put his ear near the microphone, and listen carefully to each other's speech.
Answer the phone, should pay attention to the mouth and the microphone to keep 4 cm distance; to put his ear close to the microphone, listen carefully to each other's speech.
When you answer the phone, should be careful about 4 cm of distance from the mouth and the microphone; ear closer to the microphone and listen carefully to each other's speeches.