It was evident that Miss Welland was in the act of announcing her engagement, while her mother affected the air of parental reluctance considered suitable to the occasion.
很明显，韦兰小姐正在宣布她的订婚消息，而她母亲则装出一副与这种场合相称的家长们不情愿的模样。
2
Pole pieces, key parts on electrical motor, reduce the reluctance of the air-gap; improve the static magnetic field distributions and fix the excitation windings.