可持续性不仅仅是一个流行词;它是我们海洋未来的基础。
The value of a commodity, or the quantity of any other commodity for which it will exchange, depends on the relative quantity of labor which is necessary for its production, and not on the greater or less compensation which is paid for that labor.
文学是可见世界与不可见世界之间的桥梁。