brusqueness

1·He was better at teaching artillery than natural philosophy, and was disliked by some cadets for his brusqueness, lack of sympathy and eccentric behavior.

与自然哲学相较，他更擅长教授炮兵战术原则，因为他的直率，缺乏同情以及古怪的行为，一些学员并不喜欢他。

1·The brusqueness is unusual.

那样的唐突很不寻常。