2. Instead of a
whiny turbine drill, he uses a flash of laser light to blast away dentin and enamel.
他用的是一道激光而不是烦人的涡轮钻来清除象牙质和牙齿的珐琅质。
3. He has a
whiny voice; there is something about the way he sits at his desk; and he answers questions obliquely.
他总发出嘀嘀咕咕的声音,坐姿也有问题,而且,他回答问题爱拐弯抹角。