In his book, assisted by his son, Francis -- who was the first professor of plant physiology in the world, in Cambridge -- they took into consideration every single movement for 500 pages.
本书 是在他儿子弗朗西斯的协助下完成的。 弗朗西斯是世界上第一位植物生理学教授，曾任职于剑桥大学。 在书中，他们用了500页，考虑了 植物的每一个运动。