This change of base occurred often. While one boy was worrying the tick with absorbing interest, the other would look on with interest as strong, the two heads bowed together over the slate, and the two souls dead to all things else.

• 这样扁虱经常来回两边跑，因此当一个孩子全神贯注地担心扁虱会逃到另一边时，另外一个也饶有兴趣地在一旁看着。 两个脑袋都凑得很近盯着写字板，对周围发生的一切，他俩全然不顾。