Among all the things we see throughout our lives, how much of it is real, graspable and lasting? 在全部的生命中，我们见到的一切，有多少是真实的、可以把握的、能够持久的？
Flour particle size and color are assessed by sensory analysis. Graspable flours are made from hard gluten-rich cultivars. 面粉的颗粒大小及颜色是通过感观分析进行评估的。可抓得住的即颗粒较大的面粉是由比较坚硬的富含面筋的小麦品种制得的。
Zhang: The nature is a great mystery indeed.I used to be an antitheist and always believed in determinism, which states the nature has its own rules and such rules are graspable. 张： 自然界确实是很神秘的，以前我是一个无神论者，相信决定论，相信自然界是有规律的，这个规律是可以被人认识的。
