大多数人害怕变化,但如果你把它看成是某种你总是可以依赖的东西的话,那它就能成为一种安慰。世上你能依赖的东西并不是很多。
The laws of physics as we know them may not be universal, but could vary from one universe to another in the multiverse.
The value chain is the set of activities through which a product or service is created and delivered to customers.
Food security is a global issue that requires local action.