connected with the front of something 正面的；前部的 - (also full-frontal)
a frontal attack is very strong and direct （攻击或抨击）正面的，劈头盖脸的，直截了当的 connected with a weather front （天气）锋的 a cold frontal system 冷锋系
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medical 医学 connected with the front part of the head 前额的 the frontal lobes of the brain 大脑额叶
Word Originmid 17th cent. (in the sense ‘relating to the forehead’): from modern Latin frontalis, from Latin frons, front- ‘front, forehead’.