In English
A vessel contains milk. You cannot see the butter separately in the milk. Does it mean that the milk does not contain butter? Boil the milk and then curdle it. Churn the curds and the butter in it will come to the surface. Thus, milk contains butter though it cannot be obtained without subjecting the milk to the process of boiling, fermenting and churning. Similarly, sugarcane contains sugar. But it has to be pressed and twisted in order to squeeze the juice out of it. So also, there is water in the deeper layers of the earth and oil in the mustard seed. To get the water you have to dig a well and to get the oil you have to press and crush the mustard seed.